Despite being a noble gas, helium has a carbon footprint. We haven't managed to find any helium reservoirs that don't also contain natural gas. But must they? Scientists and startups alike are on the hunt.

Thousands of years ago, indigenous farmers in the Amazon created exceptionally fertile soil. Today, scientists think it could restore the succession of rainforest plants and help reverse the effects of climate change.

For us terrestrial animals, sneezing is a regular part of life involving the movement of a lot of air. But animals that live underwater and don't breathe air like we do also sneeze. Sea sponges, corals, and hagfish use their snot to...

How do you count things you don't know about?

You’re probably aware that your blood can be A, B, AB or O, but it turns out that blood types can get a lot more complicated than that! *We made a mistake in the credits of this video: The writer of this episode was Alane Lim.

Viruses are really tiny, so you might think nothing could survive on a virus-based diet. But, according to a growing body of research, the right kind of microorganism can!

Hank brings us breaking news from a team of geneticists working on figuring out what all that "junk DNA" in the human genome really is - turns out it's not junk after all.

Once upon a time, we coexisted with other human species. And there’s one place on Earth that may have taught us more about that than any other single site.

Luckily, we live in a time where we don't have to worry about smallpox anymore. It's a horrible disease, but through smart vaccination techniques, we took it from killing millions worldwide, to being eradicated from the planet!

Did you know that a massive ancient flood triggered a thousand year ice age? 13,000 years ago, North America seemed to be thawing from a 2.6 million-year ice age. Then, a huge swath of Earth was suddenly plunged back into the cold for...

Thanks to the Monterey Bay Aquarium and their research and technology partner MBARI for partnering with us on this episode of SciShow. They worked together on an exhibition, “Into The Deep: Exploring Our Undiscovered Ocean,” to give...

Hank reviews the latest in science news, including the discovery of Element 115, the biggest volcano on Earth, and new insights into what it might mean to have small testicles.

Hank usually likes to keep science and politics separated, but the reality is that a lot of scientific research in the United States is funded by the government. This is a problem right now because the disfunction in the world of...

Some researchers think mitochondria could be hiding the key to Alzheimer's disease. And we may have a new strategy to fight the threat that the global banana industry has been facing for decades.

Humans have long known that glass bends light. However, it took us awhile to figure out that stacking lenses in a tube would open up a whole new world to science, finally allowing us a peek at the microscopic.

Gluten is a sticky protein composite found in cereal grains. Hank gives us some insight into the importance of gluten in history, as well as its impact on health in our own time.

Photosynthesis, the elegant process of making fuel from sunlight, might be the future of how we power, well, just about anything. Plants may have invented it, but humans are taking the model and really running with it, to make anything...

Although they don’t seem like the talkative type, recent research suggests that bird eggs can use vibrations to relay warnings about the outside world to their nest-mates.

Hank gets to the bottom of two studies reporting high sea ice coverage and snowmass in Antarctica in the same year that the Arctic has reported a record low of sea ice. What is going on here?

Whether they’re dancing, hunting, or being a pain in the nose, these new arachnid species will knock all 8 of your socks off.

All across the world people need to get from one place to another. And sometimes to get to that other place we need bridges. Here are eight bridges that are extraordinary in their own way, from standing the test of time to handling...

Some of science's most interesting discoveries happened totally on accident! From insects to infections, and polymers to pacemakers, we've accidentally discovered some pretty cool stuff. Watch this new episode of SciShow, hosted by...

Weather isn’t all sunshine and rainbows—sometimes it’s rain, and sometimes that rain looks like....blood?? Join us for wild episode of SciShow where we'll show you 5 scary weather phenomena that is downright spooky! Hosted by: Stefan Chin.

There are all kinds of ways that a spider can catch its prey, but few species are as extreme as the slingshot spider!