Climate action is speeding up -- and we each have the power to push that transformation forward. As the head of the UNFCCC, the UN's entity supporting the global response to climate change, Simon Stiell points to clear social and...

What's it like keeping the lights on during war? Ukrainian energy executive Maxim Timchenko shares how his company has diversified Ukraine's power structures to survive Russian attacks, highlighting the resilience of renewable energy....

If a diverse workforce makes a better company, why don't more businesses hire internationally? Innovation and migration strategist Johann Daniel Harnoss details the advantage of global talent and how to best build the systems and culture...

Thalidomide is the infamous drug at the heart of one of the world's worst drug safety catastrophes in modern medicine. And yet, more recent research is finding that thalidomide is still worth using, despite the risks. So what makes this...

Where would biology be without microscopes? But for a long time, in order to see the smallest bits of life, that life had to be dead. Then along came Atomic Force Microscopy, which let us observe things like DNA and proteins moving...

The tree of life you learned in school is wrong, even if you just graduated. We like to sort eukaryotes into big kingdoms or supergroups, but scientists can't agree what those groups should be. Here's why that's a good thing.

For thousands of years, water was thought to be an element. That is, until some of the greatest chemists in the world managed to crack it open.

By combining historical demography and epidemiology, we can (sort of) determine how people throughout history have died.

For thousands of years, sailors have been telling stories of a mysterious phenomenon called dead water. Even after scientists figured out why it happens, it still affects swimmers today.

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.

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...

SciShow takes you inside the site of the world's worst nuclear disaster to show you how, nearly 30 years later, life has adapted and persisted.

SciShow shares the latest developments in science, this week including new insights into the evolution of giant sperm, and the discovery of a whole new order of animal. ----------

Scientists have discovered an underground lake of liquid water on Mars! While this isn’t itself evidence for life on Mars, it does raise some new possibilities.

If a tree falls into the forest and doesn't decompose, what happens to it?

Humans are great at creating, and solving, problems. Hank talks with Gina McCarthy about the biggest public health problem we face today: climate change. Gina McCarthy is the Director of C-CHANGE (Center for Climate, Health and the...

Hank sits down with clinical sexologist Dr. Lindsey Doe and talks about 'fighter sperm'. Then Jessi from Animal Wonders comes on to show off her Quaker Parrot the 'monogamous bird'. -----------

Why don’t we have robots taking care of our every need by now? A little history of the field of robotics might help you understand how hard it is to get machines to perform tasks, and how far we’ve come in just a few decades.

Today’s video is a bit different from the usual because we wanted to show off the goofier side of the SciShow hosts.

If salty water is constantly spilling into the world’s oceans, does that mean they are getting saltier by the day?

Dinosaurs were huge—it's common knowledge. So why aren't modern mammals anywhere near that size? In this episode of SciShow, Hank gives a quick run-down of the reasons scientists think the land mammals of today are nowhere near the size...

It’s so easy to forgive a dog, especially when they start with those puppy dog eyes. As it turns out, those puppy dog eyes and the effect they have are no accident and the result of centuries of domestication.

Everywhere in the animal kingdom you can find teeth in all sorts of shapes and sizes, so you probably think you have a pretty good idea where they came from. But in reality, this debate is still a hot one, and it may have something to do...

Though we probably won’t find a literal Atlantis beneath the sea, that doesn’t mean that a human settlement hasn’t ever been lost to the water. Meet Doggerland.