A lunar halo, or ring around the moon, is more frequently seen than other lunar sights. Learn what causes it and when to spot ...

Different apples taste differently and are good for different uses. There’s even some unique history to the names of ...

Learn the definition of wind energy, how it works, the different types of wind energy, pros and cons, and more.

If you follow a vegetarian or vegan diet, be aware that some foods that contain animal products might not be obvious, such as ...

Looking for a dog with an even temperament? These breeds are the most sweet, loving, and gentle with kids, families, any ...

The history of solar energy was one of fits and starts, driven by individual inventors and scientists. Discover major solar ...

A single flash of lightning contains an immense amount of energy. Learn exactly how much, plus whether lightning can be ...

From aeroponics to zero waste, Treehugger's comprehensive glossary of environmental words is your guide to sustainability lingo.

It's a Treehugger's dream come true. Leafsnap is a free app that identifies plant species of all kinds, from flowers and bark to fruit and trees. Go for a walk, take a shot of a leaf, and this ...

The fall harvest brings in the bright sweetness of apples and the warm richness of pumpkins and squash. It’s also the season of persimmons, a somewhat less common fall fruit. Typically in season ...

These impressive individuals have fought hard to protect our planet. Edward Abbey (1927–1989) was one of America's most dedicated—and perhaps most outrageous—environmentalists. Born in ...

Bryan Nelson is a science writer and award-winning documentary filmmaker with over a decade of experience covering technology, astronomy, medicine, animals, and more. Named after the Polish ...