A third of all food in the U.S. gets tossed every year. Find out what's being done to help.
Companies are tracking your online activity so they can target you with ads. Should you be worried?
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In 1970, disaster struck three American astronauts 240,000 miles from Earth. How did they survive?
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The Amazon rainforest is at risk of drying out. But individuals and governments can still protect it.
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Consider the pros and cons of dropping traditional letter grades, then decide!
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A cartoonist comments on how we think about the planet on Earth Day—and the rest of the year.
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Major new efforts are underway to combat climate change by changing the cars we drive.
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Archaeologists have found evidence that fast-food counters were common in ancient Rome.
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Plans to put the portrait of abolitionist Harriet Tubman on the $20 bill get a new boost.
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A teen activist stages an unusual strike to draw attention to the impact of climate change on the Arctic.
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A Florida teen launches a new program to help protect entire ecosystems by supporting butterflies.
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