The equator is a clear and accurate line around Earth that makes measuring latitude a precise science, but when it came to figuring out how to do that with longitude, British sailors were at a loss. Until they devised a competition....

In which Hank details the five scariest things that will likely happen because of climate change.

We can learn a lot from dinosaur fossils, but figuring how they behaved is a real challenge.

Toxic waste, by definition, is harmful to living things, but there are actually a bunch of plants, animals, fungi, and microbes that can help us clean it up! Hosted by: Olivia Gordon

Usually when you think of evolution or natural selection, you think of survival of the fittest. But sometimes, the resulting traits of evolution aren’t the most efficient solutions to the problems at hand. With the bar set to “good...

From menstrual cycles to rainfall, there are lots of claims about the moon's influence. In today's episode, Hank is here to set the record straight with 8 myths & facts about our moon.

You might guess that big city subways would be filled with all sorts of nasty pathogens just waiting to infect the nearest unsuspecting human, but science doesn’t back this up at all.

SciShow explores a newly identified neurological condition, aphantasia, the inability to visualize things in your imagination, and gives tribute to Dr. Oliver Sacks, popular explorer of the human mind.

Did you know there are everyday practices that can reduce your risk of Cancer? Science can prove it. In a study published this week in the journal Frontiers in Aging, researchers propose a combination of simple strategies to help prevent...

Hank addresses a highly requested topic - liquid fluoride thorium reactors - and tells us how LFTR might be the future of energy in ... China?

SciShow takes you inside a limnic eruption, a natural disaster that’s as deadly as it is rare.

We know that lots of animals and plants can be found all over the world. But there's plenty that manage to live at the furthest points from each other they possibly can - and are /still/ the same species. It's called being bipolar, and...

When it comes to mass extinctions, you probably imagine giant volcanic eruptions or asteroids raining fire from the sky, but sometimes these events can have some unexpected causes. Hosted by: Michael Aranda

Oops! You drop your precious midnight snack on the floor! You just picked it up really quick, like less than five seconds, so it is ok to eat, right? But is the 5-second rule really legit? Hosted by: Michael Aranda ----------

Most of us are hoping that any nuclear threats are just empty threats, and getting at the facts about ICBMs can be difficult. But what would actually happen if someone launched a nuclear weapon?

You might not think about the food in your freezer much, but those frozen fries are surprisingly worthy of pondering, given that they’re the end result of a pretty clever innovation.

Hank talks with University of Montana Professor Rick Hughes about innovating technology and training the SciShow staff. Special guest appearance with Jessi and Veiled Chameleon 'Twirly'.

Water is one of the most abundant and important substances on Earth, so you think we'd know everything there is to know about it. Turns out, water is so much stranger and more complex than we ever thought! Join Olivia Gordon for a new...

You aren't the only animal with a pantry! Hosted by: Michael Aranda

Unless you saw the spider bite you, that swollen, bite-looking lesion on your arm is probably something else, and blaming it on an innocent 8-legged critter might do more harm than good. Hosted by: Stefan Chin

Nearly twenty years after the dot-com bubble burst, the internet is an essential piece of the modern world, with the public side mostly commanded by a few powerful companies.

You probably know that Australia is famous for giant snakes and spooky spiders... but oh... there's SO much more. Join Hank Green as he shows you seven truly terrifying Australian inhabitants that you might not have heard of—and some are...

Hank and Katherine talk about the wild cat known variously as a puma, mountain lion, cougar, panther and catamount and then Jessi from Animal Wonders brings a special animal guest to visit.

On the genetic level, we're not all that different from chimps. But those small differences in DNA can have massive effects. Learn what makes us truly different from chimpanzees in this new episode of SciShow!