Science

County with the most severe weather in every state

States with the most untapped wind energy potential

25 things we've learned about the moon since 1969

Major cities with the biggest projected water shortages by 2040

25 Flu Facts to Help Prepare for this Season

Environment

States with the most untapped wind energy potential

20 products you might not know are from the Amazon rainforest

States with the worst droughts

U.S. cities with the dirtiest air

U.S. cities with the cleanest air

Plants & Animals

Plants & Animals

50 photos that show companionship in the animal kingdom

Plants & Animals

50 images of parenthood in the animal kingdom

Plants & Animals

Can you answer these real 'Jeopardy!' questions about animals?

Plants & Animals

Stunning animal photos from around the world

Plants & Animals

Polar bears and 50 other species threatened by climate change

Space

History of famous firsts in space

50 space terms for understanding the universe

Space discoveries that will blow your mind

Can you answer these real 'Jeopardy!' clues about space?

Can you name who said these 50 famous quotes?

Weather

Major cities with the biggest projected temperature changes by 2050

Fastest-warming states since 1970

15 ways to stay cool this summer without AC

County with the most severe weather in every state

Major cities with the biggest projected water shortages by 2040

States with the most untapped wind energy potential

25 things we've learned about the moon since 1969

Major cities with the biggest projected water shortages by 2040

25 Flu Facts to Help Prepare for this Season

Major cities with the biggest projected temperature changes by 2050

What to watch out for in the water this summer

Counties with the biggest primary health care worker shortages

Fastest-warming states since 1970

15 ways to stay cool this summer without AC

County with the most severe weather in every state