Some of the biggest evolution questions finally answered.

High elevations can be a problem for humans. Since the air is thinner, you get less oxygen with every breath, leading to all kinds of negative side effects. But there are millions of people around the world who spend their whole lives at...

Hank describes how our brains respond biochemically to various addictive substances and behaviors and where those responses have come from, evolutionarily speaking.

When living underground leaves them vulnerable to attack, burrowing owls have a trick up their sleeve—they’ve developed the ability to mimic rattlesnake sounds that scare off predators!

Humans often take inspiration from nature when coming up with inventions, and this includes breakthroughs in fabric design that help to forward the fabulous and functional world of fashion.

Evolution is particularly vulnerable to misunderstandings around the scientific language. SciShow clears up some confusing language!

From lemurs to lizards, ants to amphibians, sharks to chickens, hundreds of animals "play dead" as a survival tactic. But how and why do animals do this? Tierney Thys explains how this curious behavior, known as tonic immobility or TI...

Some lucky animals are naturally endowed with bioluminescence, or the ability to create light. The firefly, the anglerfish, and a few more surprising creatures use this ability in many ways, including survival, hunting, and mating....

You’re having a dream, and for some reason that giant rabbit that’s about to eat you starts to sing like a bird. You wake up to find that birds are singing outside your window! Check out this SciShow Quick Question to find out why those...

Interactions between species are what define ecological communities, and community ecology studies these interactions anywhere they take place. Although interspecies interactions are mostly competitive, competition is pretty dangerous,...

Straddling Virginia and North Carolina is an area that was once described as the "most repulsive of American possessions." By 1728, it was known as the Great Dismal Swamp. But while many deemed it uninhabitable, recent findings suggest...

We need a radically new approach to ocean conservation, says marine biologist and TED Fellow Alasdair Harris. In a visionary talk, he lays out a surprising solution to the problem of overfishing that could both revive marine life and...

Hank guides us through the process of natural selection, the key mechanism of evolution.

COYOTE PETERSON IS BACK! Get ready for the return of a flying insect sting. This time, he’s traveling deep into the wilds of Rinca Island in Komodo, Indonesia! Known for its legendary dragons, this remote paradise hides another fearsome...

When Science and Pyromania Shake Hands

This video explains how plants and photosynthesis are the basis of all food sources.

The video explores how our fear of the unknown often leads us to make decisions based on short-term comfort rather than weighing long-term risks and rewards. It delves into the impact of fear on our choices, from everyday decisions like...

Why do we dream? What do dreams mean? What are dreams? We know that we dream while we are asleep. Sleep can be divided into two categories rapid eye movement or REM sleep, and non-REM sleep. When you fall...

Science Kids Cloning Endangered Species - Pros and Cons

Vera Rubin, a pioneering astronomer, defied societal norms and gender barriers to revolutionize our understanding of the universe. Her groundbreaking work on dark matter,...

Science Kids Animal Parenting V1-0003

This video explores the fascinating and diverse birthing styles of male seahorses and octopuses. Male seahorses undergo a unique process where they carry and give birth to fully formed...

Howcast - Learn about survival knives in this Howcast video with expert Dan Delavan.

Howcast - Learn the differences between yoga and Pilates from Core Pilates NYC instructor Sarah Ruback in this Howcast workout video.

Howcast - Learn about Matt Mogk, one of Howcast's zombie experts, in this video.

Howcast - Learn about the prognosis for testicular cancer in this Howcast video.