Hank clarifies the misconceptions about Chagus disease, discusses a couple of interesting celestial events - one that happened in the past and one that will happen in the distant future, and sheds more light on the benefits of sexual...

Hank hits you with a ton of news this time - Amazon CEO Jeff Bezos has plans to retrieve Saturn V rocket engines from the bottom of the Atlantic; new research on the impacts from the Deep Water Horizon oil spill to life in the Gulf of...

Plants make oxygen using photosynthesis, but what happens to the air when those trees drop their leaves in winter?

You know about fossils, but what other secrets are lurking in the ground beneath our feet?

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

Photosynthesis plays a huge role in regulating the earth's CO2. But what happens when the temperature gets high enough that photosynthesis slows down?

New evidence suggests some fossils as the oldest known sign of life on Earth, and scientists may have a way to speed up the process of carbon neutralization in the ocean!

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

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

Geologists have a few ideas as to how rain affects mountains. But could rain also help mountains grow?

You might think of national parks as a nice place to see a geyser, or a big ol’ canyon, but over the past 100 years, US national parks have produced some of the biggest, oldest, deepest, and creepiest discoveries that have been made in...

Every year the moon’s orbit gets a little bigger and it moves just a little farther away. Should we worry about the Moon breaking free?

You can complain about having the longest day ever today, and here is the science to prove it!

If you take a look at a map of Scotland, you'll notice an eerily straight line running through the highlands, this is the Great Glen Fault the product of half a billion years of time and geology.

Modern life runs on wireless technology. What if the energy powering our devices could also be transmitted without wires? Electrical engineer Ali Hajimiri explains the principles behind wireless energy transfer and shares his far-out...

In 1815, Mount Tambora erupted and its emissions spread across the globe, blotting out the sun for almost an entire year. This wreaked havoc on agriculture, leading to famines all across the Northern hemisphere. It was the year without...

In the 1980s, the world faced a huge problem: there was a rapidly expanding hole in the ozone layer. If it continued to grow, rates of skin cancer could skyrocket, photosynthesis would be impaired, agricultural production would plummet,...

I think of legacy as the weaving together of our stories passed on as a whole, says Haida storyteller Cohen Bradley. Highlighting the significance of potlatch ceremonies (or gift-giving feasts) and other Indigenous traditions of the...

Let's learn all about the waves that we play in at the beach!

As Squeaks continues to prep for his big trip with Jessi, Mr. Brown helps him learn all about how the wind outside the fort will also affect how long his airplane ride with Jessi takes!

Jessi and Anthony have been helping Squeaks learn all about flying before his big airplane ride to the robot museum so he isn’t so nervous! Here’s everything they learned together!

Today, Jessi and Sam the Bat take a look at constellations. Humans have been looking up at the sky for a long time and seeing all kinds of pictures hidden in the stars!

Jessi and Sam the Bat team up to answer your questions about space, like: How was the universe created?

The birds you see around today might not be that big, but a long time ago, there was a flying animal the size of some airplanes!