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 ...

Learn why these peculiar lizards pee powder and sleep standing up. Olivia Young is a writer, fact checker, and green living expert passionate about tiny living, climate advocacy, and all things ...

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 ...

Seal fact: These animals, also known as pinnipeds, make up three diverse groups of semi-aquatic carnivorous marine mammals. Constituting the most species-rich clade of living marine mammals, there ...

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 ...

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 ...

There’s a reason why lettuce is one of the most popular hydroponic crops for beginners and experts. The crisp, leafy green is easy to grow hydroponically, plus it's super versatile in the kitchen.

Regina Bailey is a science writer, educator, and board-certified registered nurse. Her work has been featured in "Kaplan AP Biology" and "The Internet for Cellular and Molecular Biologists.

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 ...

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 ...

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 ...

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 ...