Earth Matters

These electric-blue night clouds are expanding around the globe, says NASA

World's highest plants discovered 20,000 feet above sea level

10 not-too-cold wintertime destinations

Curious beaver unimpressed with store selling fake Christmas trees

Matter is spontaneously appearing and then disappearing around this distant star

World's largest redwood forest outside of California is coming — to Ireland

Ants communicate, 'cast ballots' with a kiss

Manatee rescued from a Florida storm drain

Vegan spends big bucks to return 100-year-old massive lobster to the sea

What are those weird squishy creatures that washed up on a California beach?

Caribou herd in Alaska suffering from mysterious decline

Radioactive diamonds are turned into batteries that last for thousands of years

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