Which Life Form REALLY Dominates Earth?
AdultsAnimalsBiologyNature Are humans really Earth's most dominant species? Let's put all of the planet's living things on a scale and see what has amassed the most mass.
Rise Of The Mesopredator
AdultsAnimalsMusicNature Thanks to humans, old school apex predators are struggling to hold onto their perch at the top of the food chain.
Why Don't Sled Dogs Ever Get Tired?
AdultsAnimalsHealthNature Sled dogs are the best endurance athletes in the world thanks to a weird quirk in their metabolism.
How Evolution Turned A Possum Into A Wolf
AdultsAnimalsBiologyNature ntil the early 20th century, Tasmania was home to a very weird wolf-like creature. Except that it wasn't a wolf. Even though it looked like a wolf.
See What It Takes to Hide a Secret Tracker in a Rhino Horn
AdultsAnimalsNature In Tanzania, a team of veterinarians are on a covert mission to protect the black rhinoceros from poaching.
Why Some Animals Follow The Moon
AdultsAnimalsEnvironmentNature Organisms of all shapes and sizes synchronize their behaviors using biological clocks. Some keep pace with the daily rising and setting sun using circadian rhythms.
How Cats Became our Feline Overlords
AdultsAnimalsHumanPets Check out how cats became our favorite little murder machines.
Are naked mole rats the strangest mammals?
AdultsAnimalsNatureScienceBiology... What mammal has the social life of an insect, the cold-bloodedness of a reptile, and the metabolism of a plant?
Leopard Mother Rescues Cub from Wild Dogs
AdultsAnimalsNatureWildlife A young leopard is taught a lesson in caution after a close call with a group of African wild dogs.
How squids outsmart their predators
AdultsAnimalsBiologyNature There are about 500 species of squid, and they live in all the world's oceans, making them a reliable food source for whales, dolphins, sharks, seabirds, fish - and even other squids. As a result, the squid's most extraordinary adaptations are those that have evolved to help them thwart these predators.
What's the difference between hibernation and sleep?
AdultsAnimalsNature The Arctic Ground Squirrel hibernates by burrowing under the permafrost and slipping into a state of suspended animation.
A simple way to tell insects apart
AdultsAnimalsNature There are nearly a million known insect species in the world, but most have one of just five common types of mouthparts.
Crocodile Feeding FRENZY!
AdultsAnimalsNature On this episode of Breaking Trail, Coyote feeds a GIANT Saltwater Crocodile!
Cannibalism in the animal kingdom - Bill Schutt
AdultsAnimalsNature Until recently, scientists thought cannibalism was a rare response to starvation or other extreme stress.
Why Don't Sheep Shrink In The Rain?
AdultsAnimalsNatureScienceBiology... Getting wet isn't REALLY what makes wool shrink; it merely exacerbates the friction between the wool fibers, which is stronger in one direction than another, so when agitated in the washer or dryer, they migrate in relation to each other in a process called "felting."
Why BEAVERS Are The Smartest Thing In Fur Pants
AdultsAnimalsNatureEnvironment Beavers have done more to shape North American landscapes than any animal beside humans. We don't notice them much today because there aren't many left, but before colonization, North America was home to hundreds of millions of these furry engineers.
Why Are There As Many Males As Females?
AdultsAnimalsBiologyNatureScience... In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that?
How to Make an Elephant Explode with Science - The Size of Life 2
AdultsAnimalsGeneticsScienceBiologyExperiments... Life on this planet is based on cells. Cells do vary in size. But they are pretty similar in their dimensions across all species. A blue whale doesn't have bigger cells than a hummingbird, just a lot more of them.