A frog and a mockingbird changed Paul Hawken's life, kindling a devotion to protect and restore nature. Now, as one of the world's preeminent environmentalists, he advocates for regeneration — a calling and action plan for the world to...

Of all the food options in the world, you'd think that feces would be low on anyone's preference list. But for these animals, eating poop can be anything from a delicacy to a health food - and yes, humans are on the list too.

It doesn't seem possible, but animal rain is definitely real, and there is an actual scientific explanation for it... probably.

Hank shares losses and finds this week, including a huge amount of Antarctic ice that’s lost for good, and 10 cool new species that are last year’s top finds.

Despite her best efforts, comedian Julia Sweeney is forced to tell a little white lie when her 8-year-old begins learning about frog reproduction -- and starts to ask some very smart questions.

Cane toads will eat just about anything, including each other! And researchers have reported a different way to help those with ALS continue to communicate their needs after losing the ability to move and speak.

How do adult strawberry poison frogs pass on toxins to their tadpoles? What happens when scientists add iodine to axolotl tanks? Find out, as our How To Adult hosts Rachel Calderon-Navarro, Project Manager at DFTBA, and Hank Green face...

Until recently, scientists thought cannibalism was a rare response to starvation or other extreme stress. Well-known cannibals like the praying mantis and black widow were considered bizarre exceptions. But now, we know they more or less...

Cyanobacteria and other microbes produce a lot of oxygen. What if we could use that oxygen to power our brains?

When you think of surfactants, you might think of soaps, detergents and other man-made chemicals. But it turns out that some other animals utilize their own versions of these sudsy molecules.

Raising tadpoles until they become small frogs is a great way to learn about the natural world.

How zookeepers select pairs for breeding to then release the eggs into the wild.

Learn about efforts to re-establish this critically endangered amphibian back into southern California.

See the first release of tadpoles back into the wild.

How zookeepers select pairs for breeding to then release the eggs into the wild.

How zookeepers select pairs for breeding to then release the eggs into the wild.

See the first release of tadpoles back into the wild.

Also, learn the challenging process behind what it takes to repopulate these toads in the wild.

Learn about efforts to re-establish this critically endangered amphibian back into southern California.

See the first release of tadpoles back into the wild.

What exactly are phospholipids, and how do they contribute to the structure and function of cell membranes? In this video, we will explore the world of phospholipids, including their chemical structure, properties, and functions in the...

In this video, we explore the fascinating world of toads, nocturnal creatures with rough, dry skin and large protruding eyes. We learn about their unique characteristics, such as their ability to walk instead of jump and their use of...

This brightly-coloured frog lays its eggs on the ground and must climb high into the rainforest canopy to transport its young to a watery nursery. How? Biology - Animal Kingdom - Learning Points. Poison arrow frogs have poisonous skin,...

Discover why the precarious choice of spawning location means this species' young must make a life-or-death decision as soon as they hatch. Biology - Animal Kingdom - Learning Points. The South American red-eyed tree frog lives in rivers...