In this video Paul Andersen explains the difference between chemical and physical processes. Chemical processes occur when bonds are broken and reformed. Physical processes occur when intermolecular forces are broken and reformed. A...

Today, bones hold us up. But for ancient jawless fishes, bones may have been a way to store energy for long journeys. Plus, new research indicated that hippos and cetaceans may have evolved their aquatic traits separately.

So how do astronauts manage to pee and poop in microgravity? And what happens to all of their waste? Do you really want to know? If you do, the answers are inside!

You spend weeks studying for an important test. On the big day, you wait nervously as your teacher hands it out. You're working your way through, when you're asked to define "ataraxia." You know you've seen the word before, but your mind...

The apparent void in the darkness of space is not as empty as you might think. In fact, it somehow holds the key to creating stars, planets, and even us! And Dutch super-scientist Ewine van Dishoeck made it her life's work to figure out...

For years, catch-and-release anglers have been pouring soda on bleeding fish in an effort to help save their lives. But.. does this actually work?

Nothing changed movies like the arrival of synchronous sound. NOTHING! Acting, directing, cinematography, and presentation all had to be rethought. Some studios were more quick to take on the challenge while others waited until the last...

In 2019, Amazon signed the Climate Pledge, a commitment to become a net-zero carbon business by 2040. Dave Clark, Amazon's chief of consumer retail, and Kara Hurst, head of the company's sustainability efforts, sit down with entrepreneur...

What would it take to reimagine the limits of architecture? Débora Mesa Molina offers some answers in this breathtaking, visual tour of her work, showing how structures can be made with overlooked materials and unconventional methods --...

Researcher Kwabena Boahen is looking for ways to mimic the brain's supercomputing powers in silicon -- because the messy, redundant processes inside our heads actually make for a small, light, superfast computer.

What gives the ocean its distinct, sometimes pungent smell? It turns out the answer is more than just dead fish or salt: it’s the scent of tons of phytoplankton being munched on!

SciShow explains radiocarbon dating, the best way to date a dead thing!

You may have heard the expression that dogs 'see with their noses.' But these creature's amazing nasal architecture actually reveals a whole world beyond what we can see. Alexandra Horowitz illustrates how the dog's nose can smell the...

Bdelloid rotifers have a superpower. If their DNA is shredded to pieces, whether from a lack of water or a blast of radiation, they can put it back together.

It's been conjectured that the center of the Milky Way is swarming with tens of thousands of black holes. And now we've actually seen them.

Two extinct relatives of horses and rhinos are closely related to each other but have strikingly different body plans. How did two of the same kind of animal, living in the same place, end up looking so different?

What if diseases could be treated with a patient's own cells, precisely and on demand? Biotech entrepreneur Nabiha Saklayen explains how we could harness advances in biology, machine learning and lasers to create personalized stem cell...

For upside-down mirrors, super hot volcanic chimneys, and neon rocks with living microorganisms, look no further than the Guaymas Basin in the Gulf of California.

This week in SciShow News, Hank tells us about some weird science, including a squid that's not a squid, animals that can talk, and new insights into how you can mess up your body much faster and for much longer than you ever thought...

In this prophetic 2003 talk -- just days before Dolly the sheep was stuffed -- biotech ethicist Gregory Stock looked forward to new, more meaningful (and controversial) technologies, like customizable babies, whose adoption might drive...

Nick Veasey shows outsized X-ray images that reveal the otherworldly inner workings of familiar objects -- from the geometry of a wildflower to the anatomy of a Boeing 747. Producing these photos is dangerous and painstaking, but the...

It's so obvious that it's practically proverbial: you can't unboil an egg. But actually, it turns out that you can -- sort of. Eleanor Nelsen explains the process by which mechanical energy can undo what thermal energy has done.

In 2000, the UN laid out 8 goals to make the world better by reducing poverty and disease -- with a deadline of 2015. As that deadline approaches, Jamie Drummond of ONE.org runs down the surprising successes of the 8 Millennium...

We thought that we taught dogs how to play fetch, but some adorable wolf pups may have just proved us wrong. Also some plants may be immortal?