Cattle egrets live on insects. And in the savannah, insects congregate on the ubiquitous water buffalo. In sub-Saharan Africa, for example, you'll find these birds constantly perched atop buffalo ...

Melissa Breyer is Treehugger’s former senior editorial director. Her writing and photography have been featured in The New York Times, The Guardian, National Geographic, Audubon Magazine, and ...

Most animal-rights activists follow a plant-based diet for ethical reasons and studiously avoid places where meat makes up the bulk of the menu. Still, vegetarians or vegans may occasionally find ...

Although many lunar phenomena are one-night-only events, a ring around the moon is much less elusive. Also known as a lunar halo, a bright white ring of light around the moon can appear anytime ...

Bioluminescent algae are a group of tiny marine organisms that can produce an ethereal glow in the dark. While the phenomenon may occur in any region or sea depth, some of the most stunning ...

Reindeer are known worldwide as Santa Claus' fictional sidekicks, but these animals are real and sometimes abundant in polar and mountainous regions. Also called caribou, this species of deer is ...

Chanie Kirschner is a writer, advice columnist, and educator who has covered topics ranging from parenting to fashion to sustainability. Buying green bananas, or any unripe fruit for that matter ...

Mary Jo DiLonardo has worked in print, online, and broadcast journalism for 25 years and covers nature, health, science, and animals. With their sweet teddy bear faces and wooly charm, babydoll ...

Few mammals rival the eccentricity of these venomous, egg-laying oddballs. Noel Kirkpatrick is an editor and writer based in Tacoma, Washington. He covers many topics, including animals, science ...

From their variety of spots to their hidden wings, there is much to learn about these helpful and charming insects. Angela Nelson is a Pulitzer Prize-winning digital editor and storyteller who ...

Bryan Nelson is a science writer and award-winning documentary filmmaker with over a decade of experience covering technology, astronomy, medicine, animals, and more. Sea turtles are charismatic ...

Learn what business and industry are doing to take responsibility for their impact on the planet.