Explore awards

Use the filter menu and interactive map to explore the past competitions offered and grants awarded through the Environmental Literacy Program.

To learn more about project findings and outcomes, view the summaries of our grantees’ summative evaluation reports.

Hurricanes and Climate Change: Local Impacts and Global Systems

Funding: $500,921
Year: 2010
The Miami Science Museum, in collaboration with Ideum and the Institute for Learning Innovation, is designing and developing an interactive multi-user exhibit that allows visitors to explore the global dimensions and local impacts of climate change. The exhibit will raise public understanding about the underlying science, the human causes, and the potential impacts of climate change by combining the attraction of a 4-foot spherical display with a user-controlled interface that lets visitors control the sphere and choose from a range of global and local content they wish to explore.

The Miami Science Museum, in collaboration with Ideum and the Institute for Learning Innovation, is designing and developing an interactive multi-user exhibit that allows visitors to explore the global dimensions and local impacts of climate change. The exhibit will raise public understanding about the underlying science, the human causes, and the potential impacts of climate change by combining the attraction of a 4-foot spherical display with a user-controlled interface that lets visitors control the sphere and choose from a range of global and local content they wish to explore. A particular focus is on climate-related impacts on coastal communities, including the dangers posed by rising sea level and the possibility of more intense hurricanes. The project emphasizes engagement of diverse, multigenerational audiences through development of an interface that is fully bilingual and that promotes social interaction. The open-source learning module will be adaptable by other museums, to explore climate impacts specific to their region.

Award Number: NA10SEC0080024
Grant Dates: 10/01/2010 to 12/30/2012
PI: Jennifer Santer
State: Florida   County:   Miami-Dade District: FL27
Partners: Institute for Learning Innovation · Ideum · University of Miami / Cooperative Institute for Marine and Atmospheric Studies (CIMAS) ·

Engaging ESL Adult and Youth Learners in Technologically Facilitated Outdoor Experiential Learning to Improve Environmental, Ocean, Climate and English Literacy

Funding: $203,454
Year: 2010
Literacy Volunteers America of Monroe County and The College of Exploration are developing and implementing a pilot project to target traditionally under-represented ethnic groups who are limited English proficient – many reading and writing in English at the grade 0 - grade 5.5 level.

Literacy Volunteers America of Monroe County and The College of Exploration are developing and implementing a pilot project to target traditionally under-represented ethnic groups who are limited English proficient – many reading and writing in English at the grade 0 - grade 5.5 level. The project goals are for learners of English as a Second Language (ESL) to use digital photo cameras, digital video cameras, waterproof underwater HD cameras and GPS technologies to geo-locate, explore, observe, record, display and tell stories in English both in words, photos and short HD video clip sequences. Stories will be about the exploration of places like the National Marine Sanctuaries and other areas of the country and coasts where there are scientific observation and monitoring opportunities created and supported by NOAA partners.

Award Number: NA10SEC0080025
Grant Dates: 10/01/2010 to 09/30/2012
PI: Mary Casanova
State: Florida   County:   Monroe District: FL28
Partners: College of Exploration · Cooke Communications Florida, LLC. · ProLiteracy · Reef Environmental Education Foundation (REEF) · Pigeon Key Foundation · Volunteers for Adult Literacy in Florida (VALF) ·

Exploring Earth Systems: Expanding Data Visualization Experiences for Museum Learners

Funding: $826,112
Year: 2010
The American Museum of Natural History, in association with several NOAA entities, will be creating a suite of media products employing visualization of Earth-observation data as well as associated professional development programs to expand educational experiences in informal science institutions nationwide. Interactive versions of the visualizations will also be disseminated via the AMNH website. Visualization assets will be distributed to NOAA for utilization on climate.gov and Science on a Sphere.

The American Museum of Natural History, in association with several NOAA entities, will be creating a suite of media products employing visualization of Earth-observation data as well as associated professional development programs to expand educational experiences in informal science institutions nationwide. Interactive versions of the visualizations will also be disseminated via the AMNH website. Visualization assets will be distributed to NOAA for utilization on climate.gov and Science on a Sphere. The creation of training programs and educational materials for informal education professionals will enhance the experience and efficacy of the data visualizations as tools to understand and build stewardship of Earth systems.

Award Number: NA10SEC0080014
Grant Dates: 10/01/2010 to 09/30/2014
PI: Vivian Trakinski
State: New York   County:   New York District: NY12
Partners: Institute for Learning Innovation · Museum of Science and Industry (MSI) Chicago · New York University (NYU) · NOAA Earth System Research Laboratory (ESRL) · NOAA National Weather Service (NWS) / Climate Prediction Center · NOAA Research · NOAA Atlantic Oceanographic and Meteorological Laboratory · NYU Center for Advanced Digital Applications ·

Summer Research Program for Science Teachers

Funding: $87,971
Year: 2010
This project that will increase the knowledge and research skills of middle and high school earth science and environmental science teachers. By doing so, these teachers will be better able to elevate their students' overall interest and literacy in science, improve their understanding of ecosystem and sustainable development principles, and improve their stewardship of ecosystems. The teachers will learn how the tools, techniques, and information services are used by NOAA and its partners to improve ecosystem-based management.

This project that will increase the knowledge and research skills of middle and high school earth science and environmental science teachers. By doing so, these teachers will be better able to elevate their students' overall interest and literacy in science, improve their understanding of ecosystem and sustainable development principles, and improve their stewardship of ecosystems. The teachers will learn how the tools, techniques, and information services are used by NOAA and its partners to improve ecosystem-based management. This will enable students to appreciate better the dynamism and excitement of these disciplines. This program targets schools with under-served minority populations.

Competition: 2010: NOAA Broad Agency Announcement for FY 2010—2011
Award Number: NA10SEC0080034
Grant Dates: 10/01/2010 to 09/30/2012
PI: Samuel Silverstein
State: New York   County:   New York District: NY13
Partners: Columbia University / Lamont-Doherty Earth Observatory / Earth Institute ·

Summer Research Program for Science Teachers

Funding: $87,971
Year: 2010
This project that will increase the knowledge and research skills of middle and high school earth science and environmental science teachers. By doing so, these teachers will be better able to elevate their students' overall interest and literacy in science, improve their understanding of ecosystem and sustainable development principles, and improve their stewardship of ecosystems. The teachers will learn how the tools, techniques, and information services are used by NOAA and its partners to improve ecosystem-based management.

This project that will increase the knowledge and research skills of middle and high school earth science and environmental science teachers. By doing so, these teachers will be better able to elevate their students' overall interest and literacy in science, improve their understanding of ecosystem and sustainable development principles, and improve their stewardship of ecosystems. The teachers will learn how the tools, techniques, and information services are used by NOAA and its partners to improve ecosystem-based management. This will enable students to appreciate better the dynamism and excitement of these disciplines. This program targets schools with under-served minority populations.

Competition: 2010: NOAA Broad Agency Announcement for FY 2010—2011
Award Number: NA10SEC0080034
Grant Dates: 10/01/2010 to 09/30/2012
PI: Samuel Silverstein
State: New York   County:   New York District: NY13
Partners: Columbia University / Lamont-Doherty Earth Observatory / Earth Institute ·

Global, Local, Coastal: Preparing The Next Generation for A Changing Planet

Funding: $468,428
Year: 2015
This project, “Global, Local, Coastal: Preparing the Next Generation for A Changing Planet," was led by Groundwork Hudson Valley in partnership with Sarah Lawrence College's Center for the Urban River, to integrate and expand the work of three award-winning environmental education centers in Yonkers, NY – The Science Barge, Ecohouse and the Center for the Urban River (CURB). Its primary objective was to prepare low-income students for the impact of a changing climate so that they can participate both personally and professionally in a world in which these issues are increasingly prevalent.

This project, “Global, Local, Coastal: Preparing the Next Generation for A Changing Planet," was led by Groundwork Hudson Valley in partnership with Sarah Lawrence College's Center for the Urban River, to integrate and expand the work of three award-winning environmental education centers in Yonkers, NY – The Science Barge, Ecohouse and the Center for the Urban River (CURB). Its primary objective was to prepare low-income students for the impact of a changing climate so that they can participate both personally and professionally in a world in which these issues are increasingly prevalent. It reached an audience that is not well served by traditional programs and is most vulnerable to the consequences of climate change. Over the course of two years, the project served 544 high school youth from the Yonkers public school system through a new, integrated curriculum that presented these issues from multiple perspectives in an experiential learning format. Beyond its impact on students, the project has had a broader impact on people in our region who have visited the Science Barge, Ecohouse and CURB, which together receive close to 10,000 people each year. The new exhibits have reinforced key themes related to resiliency and adaptation and staff have integrated these concepts into their public tours. Beyond our region, the project has further impacted STEM educators across the country with access to the newly created "Global, Local, Coastal" curriculum and web application which is posted on Groundwork's website and accessible without charge. Other partners included NOAA’s Hudson River National Estuarine Research Reserve, the Lamont-Doherty Earth Observatory, and Center for Climate Risk in the Urban Northeast (CCRUN), and Yonkers Public Schools. The project has been carried out in a community that has been severely affected by extreme weather in the last decade, including three hurricanes. Outcomes have helped to create “an informed society to anticipate and respond to climate and its impacts” and served to support NOAA’s goal of a developing a “Weather-Ready Nation” and “Resilient Coastal Communities and Economies.”

Award Number: NA15SEC0080004
Grant Dates: 09/01/2015 to 06/30/2019
PI: Ellen Theg
State: New York   County:   Westchester District: NY16
Partners: Columbia University / Lamont-Doherty Earth Observatory / Earth Institute · Sarah Lawrence College / Center for the Urban River at Beczak (CURB) · International Research Institute for Climate and Society (IRI) · Consortium for Climate Risk in the Urban Northeast (CCRUN) · National Estuarine Research Reserve (NERR) Hudson River · NYS Office of Storm Recovery (GOSR) · Yonkers Public Schools / Charles E. Gorton High School · Hitachi America, Ltd. · Yonkers Public Schools / Community School 13 · Action for the Climate Emergency · Yonkers Public Schools / Riverside High School for Engineering and Design · Yonkers Public Schools / Saunders Trades and Technical High School · Yonkers Public Schools · Yonkers Public Schools / Lincoln High School · Yonkers Public Schools / Robert C. Dodson School ·

Carbon Networks

Pacific Science Center offsite link · Seattle, Washington
Funding: $88,478
Year: 2014
Carbon Networks is a three-year collaborative project that aims to improve public understanding of the impacts of ocean acidification and atmospheric carbon dioxide on the environment. It involves three informal education partners - the Exploratorium in San Francisco, the Waikiki Aquarium in Hawaii, and the Pacific Science Center in Seattle - working together to provide professional development for staff and local educators, as well as create educational programs and activities for museum visitors using authentic ocean and atmospheric data.

Carbon Networks is a three-year collaborative project that aims to improve public understanding of the impacts of ocean acidification and atmospheric carbon dioxide on the environment. It involves three informal education partners - the Exploratorium in San Francisco, the Waikiki Aquarium in Hawaii, and the Pacific Science Center in Seattle - working together to provide professional development for staff and local educators, as well as create educational programs and activities for museum visitors using authentic ocean and atmospheric data. The project aims to address the disconnect between scientific evidence and the public's understanding of these impacts by developing and implementing professional development workshops and training programs that connect local ocean and atmospheric data with regional, Pacific, and global systems. The goal is to create meaningful place-based education narratives and activities that help people better understand the evolving narrative and impact of ocean acidification and climate change.

Award Number: NA14SEC0080003
Grant Dates: 09/01/2014 to 08/31/2017
PI: Keni Sturgeon
State: Washington   County:   King District: WA07
Partners: Exploratorium · Seattle Aquarium · U.S. Integrated Ocean Observing System / NANOOS · University of California at Santa Barbara · NOAA Earth System Research Laboratory (ESRL) · National Marine Fisheries Service (NMFS) / West Coast · NOAA Pacific Marine Environmental Laboratory (PMEL) · National Marine Fisheries Service (NMFS) / Southwest Fisheries Science Center · National Marine Sanctuary (NMS) / Channel Islands · National Marine Sanctuary (NMS) / Greater Farallones · National Marine Sanctuary (NMS) / Cordell Bank · National Marine Sanctuary (NMS) / Olympic Coast · U.S. Integrated Ocean Observing System / CeNCOOS · University of California—Berkeley · National Marine Sanctuary (NMS) / Monterey Bay · University of Hawaii System / Waikiki Aquarium · National Sea Grant College Program / University of Washington (UW) · U.S. Integrated Ocean Observing System / PacIOOS · National Marine Fisheries Service (NMFS) / Alaska Fisheries Science Center ·

Advancing Climate Literacy through Investment in In-service and Pre-service Science Educators (ACLIPSE)

Western Washington University offsite link · Bellingham, Washington
Funding: $31,192
Year: 2014
The ACLIPSE project leveraged NOAA assets including the NOAA-funded Ocean Sciences Sequence for Grades 6–8: The Ocean–Atmosphere Connection and Climate Change, data from NOAA-supported ocean, estuarine and atmospheric observing networks, and NOAA-affiliated scientists.

The ACLIPSE project leveraged NOAA assets including the NOAA-funded Ocean Sciences Sequence for Grades 6–8: The Ocean–Atmosphere Connection and Climate Change, data from NOAA-supported ocean, estuarine and atmospheric observing networks, and NOAA-affiliated scientists. ACLIPSE developed strategies for incorporating real-time ocean observing data into climate and ocean science education; designed and implemented an undergraduate curriculum in climate science for pre-service (student) teachers at multiple universities (http://mare.lawrencehallofscience.org/college-courses/ACLIPSE); offered a variety of workshops for teachers and educators across the country and at National Estuarine Research Reserves (NERRs); and developed materials specifically designed to provide professional learning and instructional materials for middle and high school teachers to use with their students and other learners (http://mare.lawrencehallofscience.org/curriculum/climate-data-aclipse-a…). The professional learning workshops for local teachers and NERR Education Coordinators and research staff (i.e., System Wide Monitoring Program (SWMP) Technicians) were located at five NERR sites representing different regions of the US, including the Pacific Northwest (Kachemak Bay NERR, Alaska and Padilla Bay NERR, WA), central West Coast (San Francisco NERR, CA), Southeast (GTM NERR, FL), and Northeast/Mid-Atlantic (Jacques Cousteau NERR, NJ). Resources and instructional materials focused on climate and ocean acidification were provided to all participants for learning about and teaching these important and relevant content areas, and as the context for teaching about and applying current teaching and learning research. Emphasis was placed on helping the teacher audiences to becoming more expert on how to use NOAA monitoring data in the classroom in authentic and engaging ways to build teacher and student data skills. NERR educators and their local in-service teachers were provided with professional learning opportunities and a collection of activities providing online data, place-based, locally relevant observing data, NGSS teaching and learning pedagogy, and climate change topics. The project built capacity of formal and informal science educators by providing (1) opportunities to become knowledgeable about global environmental change and real-time data; (2) exposure to place-based connections with the ocean through technological observing systems; and (3) materials and expertise to apply their learning to teaching practice in a long-term, sustainable manner. ACLIPSE instructional materials are based on the principle that real-time environmental data is a valuable tool for providing students with opportunities for self-directed exploration of the natural world. Students engaging in these activities gain a deeper understanding of carbon cycling, ocean acidification, and other phenomena related to climate change. These activities were designed with the three-dimensional approach to teaching in mind (e.g. NGSS-designed), and also use a data literacy framework to build educators and their learners’ skills in using data visualizations. The materials for informal educators and grades 6-8 teachers can also be accessed from the NOAA Education site, Classroom- Ready Data Resources, Climate & Data ACLIPSE Activities at https://www.noaa.gov/education/resource-collections/data/classroom-ready. Partners in the project included Rutgers University, Padilla Bay National Estuarine Research Reserve, Florida State University, California State University East Bay, Louisiana State University, and multiple NERR sites and Education Coordinators across the country and their local secondary teachers.

Award Number: NA14SEC0080005
Grant Dates: 10/01/2014 to 06/01/2015
PI: Jude Apple
State: Washington   County:   Whatcom District: WA02
Partners: Lawrence Hall of Science ·

Advancing Climate Literacy through Investment in In-service and Pre-service Science Educators (ACLIPSE)

Funding: $273,771
Year: 2015
The ACLIPSE project leveraged NOAA assets including the NOAA-funded Ocean Sciences Sequence for Grades 6–8: The Ocean–Atmosphere Connection and Climate Change, data from NOAA-supported ocean, estuarine and atmospheric observing networks, and NOAA-affiliated scientists.

The ACLIPSE project leveraged NOAA assets including the NOAA-funded Ocean Sciences Sequence for Grades 6–8: The Ocean–Atmosphere Connection and Climate Change, data from NOAA-supported ocean, estuarine and atmospheric observing networks, and NOAA-affiliated scientists. ACLIPSE developed strategies for incorporating real-time ocean observing data into climate and ocean science education; designed and implemented an undergraduate curriculum in climate science for pre-service (student) teachers at multiple universities (http://mare.lawrencehallofscience.org/college-courses/ACLIPSE); offered a variety of workshops for teachers and educators across the country and at National Estuarine Research Reserves (NERRs); and developed materials specifically designed to provide professional learning and instructional materials for middle and high school teachers to use with their students and other learners (http://mare.lawrencehallofscience.org/curriculum/climate-data-aclipse-a…). The professional learning workshops for local teachers and NERR Education Coordinators and research staff (i.e., System Wide Monitoring Program (SWMP) Technicians) were located at five NERR sites representing different regions of the US, including the Pacific Northwest (Kachemak Bay NERR, Alaska and Padilla Bay NERR, WA), central West Coast (San Francisco NERR, CA), Southeast (GTM NERR, FL), and Northeast/Mid-Atlantic (Jacques Cousteau NERR, NJ). Resources and instructional materials focused on climate and ocean acidification were provided to all participants for learning about and teaching these important and relevant content areas, and as the context for teaching about and applying current teaching and learning research. Emphasis was placed on helping the teacher audiences to becoming more expert on how to use NOAA monitoring data in the classroom in authentic and engaging ways to build teacher and student data skills. NERR educators and their local in-service teachers were provided with professional learning opportunities and a collection of activities providing online data, place-based, locally relevant observing data, NGSS teaching and learning pedagogy, and climate change topics. The project built capacity of formal and informal science educators by providing (1) opportunities to become knowledgeable about global environmental change and real-time data; (2) exposure to place-based connections with the ocean through technological observing systems; and (3) materials and expertise to apply their learning to teaching practice in a long-term, sustainable manner. ACLIPSE instructional materials are based on the principle that real-time environmental data is a valuable tool for providing students with opportunities for self-directed exploration of the natural world. Students engaging in these activities gain a deeper understanding of carbon cycling, ocean acidification, and other phenomena related to climate change. These activities were designed with the three-dimensional approach to teaching in mind (e.g. NGSS-designed), and also use a data literacy framework to build educators and their learners’ skills in using data visualizations. The materials for informal educators and grades 6-8 teachers can also be accessed from the NOAA Education site, Classroom- Ready Data Resources, Climate & Data ACLIPSE Activities at https://www.noaa.gov/education/resource-collections/data/classroom-ready. Partners in the project included Rutgers University, Padilla Bay National Estuarine Research Reserve, Florida State University, California State University East Bay, Louisiana State University, and multiple NERR sites and Education Coordinators across the country and their local secondary teachers.

Award Number: NA15SEC0080001
Grant Dates: 06/01/2015 to 09/30/2019
PI: Jude Apple
State: Washington   County:   Thurston District: WA10
Partners: Lawrence Hall of Science · Washington State / Office of Superintendent of Public Instruction ·

Advancing Climate Literacy through Investment in In-service and Pre-service Science Educators (ACLIPSE)

Western Washington University offsite link · Bellingham, Washington
Funding: $31,192
Year: 2014
This three-year project leverages NOAA assets including the NOAA-funded Ocean Sciences Sequence for Grades 6–8: The Ocean–Atmosphere Connection and Climate Change, data from NOAA-supported ocean, estuarine and atmospheric observing networks, and NOAA-affiliated scientists. The goal is to design and implement a complementary suite of materials, courses and workshops for university teacher educators to use with middle school in-service and preservice teachers.

This three-year project leverages NOAA assets including the NOAA-funded Ocean Sciences Sequence for Grades 6–8: The Ocean–Atmosphere Connection and Climate Change, data from NOAA-supported ocean, estuarine and atmospheric observing networks, and NOAA-affiliated scientists. The goal is to design and implement a complementary suite of materials, courses and workshops for university teacher educators to use with middle school in-service and preservice teachers. The project builds capacity of formal science educators by providing (1) opportunities to become knowledgeable about global environmental change and real-time data; (2) exposure to different climate knowledge systems through place-based connections with the ocean through technological and/or indigenous observing systems; and (3) materials and expertise to apply their learning to teaching practice in a long-term, sustainable manner. Educational partners in the project include Louisiana State University, Florida State University, California State University East Bay, and middle school teachers from Tribal communities in Washington state.

Award Number: NA14SEC0080005
Grant Dates: 10/01/2014 to 06/01/2015
PI: Jude Apple
State: Washington   County:   Whatcom District: WA02
Partners: Lawrence Hall of Science ·

From Mt. Rainier to the Pacific Coast: Fostering Resilient Climate Leaders, Communities and Coastal Ecosystems

Funding: $298,713
Year: 2015
Nisqually River Foundation with partners (South Sound GREEN, Chehalis Basin Education Consortium, and Mount Rainier Institute) with support from NOAA Fisheries’ West Coast Region implemented their project, “From Mt. Rainier to the Pacific Coast: Fostering Resilient Climate Leaders, Communities and Coastal Ecosystems,” over 3 years, from 2016-2018. Our region faces the climate change threats of sea level rise, receding glaciers, extreme weather/flooding, ocean acidification and impacts on humans and important local resources, such as surface and groundwater, salmon, forests, and shellfish.

Nisqually River Foundation with partners (South Sound GREEN, Chehalis Basin Education Consortium, and Mount Rainier Institute) with support from NOAA Fisheries’ West Coast Region implemented their project, “From Mt. Rainier to the Pacific Coast: Fostering Resilient Climate Leaders, Communities and Coastal Ecosystems,” over 3 years, from 2016-2018. Our region faces the climate change threats of sea level rise, receding glaciers, extreme weather/flooding, ocean acidification and impacts on humans and important local resources, such as surface and groundwater, salmon, forests, and shellfish. Together we engaged more than 120 teachers and their 3,000+ students from the Nisqually, South Puget Sound and Chehalis watersheds to understand and predict changes in climate, weather, oceans, and coasts. We held three Summer Teachers Institutes to bring teachers connect teachers with local science experts in climate change impacts in the Pacific Northwest. Our 2017 Institute was held in partnership with Mount Rainier Institute, who also hosted Climate Resilient Youth Leadership Programs for 350 12-18-year olds. Participants generated and participated in Community Resilience Action Projects to conserve local ecosystems and increase resiliency in their communities to extreme weather events and changing climate. These projects included: riparian habitat restoration in the Nisqually, Chehalis, and Deschutes basins; creating recycling and composting programs on school campuses; eliminating Styrofoam from school cafeterias; creating a Migration Parade event to explore climate impacts on migratory species; the “Pick a DOT- Do One Thing - What’s your thing?” on-line videos; and the creation of high-impact environmental education art installations, to name a handful. Students also monitored local stream flows, temperatures, and water quality, building on a previous Targeted Watershed Grant from the EPA and a data set that goes back to 1992. NOAA’s mission of Service was supported as teachers and students shared their knowledge in their classrooms, with school districts, at community meetings, and through social media. NOAA assets used included the NW Marine Fisheries staff, Data in the Classroom, CoCoRaHS, NOAA-NASA Cloud Watcher Chart, NOAA’s Climate Literacy Principles, Beat the Uncertainty game, Game of Floods, Thermal Expansion label, the Marine Mammals of the US West Coast, and more. Other local contributing partners include the Nisqually Indian Tribe, the Squaxin Tribe, US Fish and Wildlife Service, Nisqually Land Trust, Thurston Conservation District and Capital Region Educational Service District 113.

Award Number: NA15SEC0080007
Grant Dates: 04/01/2016 to 07/31/2019
PI: Justin Hall
State: Washington   County:   Thurston District: WA10
Partners: National Marine Fisheries Service (NMFS) / West Coast · Chehalis Basin Education Consortium · South Sound GREEN (Global Rivers Environmental Education Network) · Mount Rainier Institute · U.S. National Park Service / Mount Rainier National Park · Nisqually Land Trust · Capitol Land Trust · Chehalis River Basin Land Trust · NOAA Office of Education · U.S. Fish & Wildlife Service / Billy Frank Jr. Nisqually National Wildlife Refuge · Nisqually Tribe · Joint Base Lewis–McChord · Mason Conservation District · Squaxin Island Tribe · Puget Sound Estuarium · Washington State Department of Ecology / Ecology Youth Corps ·