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2021 was world’s 6th-warmest year on record

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Explore NOAA //
NOAA names Long Island Sound estuary as a protected place
U.S. saw its 4th-warmest year on record, fueled by a record-warm December
What factors contributed to Colorado's deadly Marshall fire?
Love your national marine sanctuaries? Download our 50th anniversary posters today
Winter driving: Watch out for these 4 'sneaky' hazards
More NOAA news and features
WEATHER
Weather
Snowy winter day.
Q&A: Winter weather forecasts, from our national centers to your neighborhood
Q&A: Winter weather forecasts, from our national centers to your neighborhood
OCEAN & COASTS
Ocean & Coasts
Biological debris that falls from higher in the water column is also known as marine snow. Some flakes fall for weeks before finally reaching the ocean floor.
Does it snow in the ocean? See for yourself
EDUCATION
Education
Hand drawn illustrations of the ozone.
A lucky guess? Learn the science of ozone depletion with NOAA and NASA
These 8th graders predicted the minimum level of ozone in 2021. But how?
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