Nearly 1,800 newsrooms have shuttered across the US since 2004, leaving many communities unseen, unheard and in the dark. In this passionate talk and rallying cry, journalist Chuck Plunkett explains why he rebelled against his employer...

Symmetric keys are essential to encrypting messages. How can two people share the same key without someone else getting a hold of it? Upfront asymmetric encryption is one way, but another is Diffie-Hellman key exchange.

In 1901, David Hänig published research that led to what we know today as the taste map: an illustration that divides the tongue into four separate areas. It has since been published in textbooks and newspapers. There is just one...

Do 97% of climate scientists really agree that humans are the main cause of climate change? Yep! Here's what the 97 percent statistic *really* means.

Natasha Tsakos presents part of her one-woman, multimedia show, "Upwake." As the character Zero, she blends dream and reality with an inventive virtual world projected around her in 3D animation and electric sound.

Lockdown math announcement

Are humans nature's greatest architects? When we look elsewhere in nature, we find some pretty amazing animal architects. Species like ants, termites, prairie dogs, birds, and more have engineered some incredible structures. This week we...

In this video Paul Andersen shows conceptual thinking in a mini-lesson on inputs, processes and outputs in a system.

T
ERMS:
System models - a representation o
f a system
Interactions - reciprocal (two-way) acti
on...

Jim Simons was a mathematician and cryptographer who realized: the complex math he used to break codes could help explain patterns in the world of finance. Billions later, he's working to support the next generation of math teachers and...

If a surface is contaminated with the SARS-CoV-2 virus, how long does it pose a risk of infection?

Some of the oldest galaxies we’ve ever seen are small, faint satellite galaxies orbiting the Milky Way, and they're providing us with a glimpse of how the universe evolved.

Carl Sagan predicted some amazing things including the aftermath of nuclear war.

After observing what we thought was just a big asteroid in the asteroid belt, a team of astronomers now thinks this might qualify as a dwarf planet. And scientists had the chance to directly observe the collision of two neutron stars for...

Astronomers have theorized about an invisible star made up of theoretic particles in the past, but did we recently detect the gravitational waves of two of them colliding? Plus, extraterrestrial rocks from a decades-old mission keep...

Artist Sarah Sze takes us on a kaleidoscopic journey through her work: immersive installations as tall as buildings, splashed across walls, orbiting through galleries -- blurring the lines between time, memory and space. Explore how we...

Google can find something for you on the other side of the world in less than a second. Why does your personal computer take so much longer?

Some people have more taste buds than the rest of us. They're called supertasters, and they can taste things others can't.

There's a myth out there that music will make your baby smarter. But it turns out that Mozart will not turn your baby into Einstein.

The Bone Wars resulted in the description of some of the most famous dinosaurs we know of today, but not without some pretty big mistakes.

Ink that conducts electricity; a window that turns from clear to opaque at the flip of a switch; a jelly that makes music. All this stuff exists, and Catarina Mota says: It's time to play with it. Mota leads us on a tour of surprising...

The source of earth's water is something of a mystery, and some scientists are starting to think that the sun might have provided the special ingredients to help.

Jessi and Squeaks show you how to make a pinhole viewer so you can safely watch the solar eclipse!

Teachers emotionally support our kids -- but who's supporting our teachers? In this eye-opening talk, educator Sydney Jensen explores how teachers are at risk of "secondary trauma" -- the idea that they absorb the emotional weight of...

Want to get your sweetheart something really special? Give them a mineral called fingerite, and then stare at them for a while! Find out why, in this Valentine's Day edition of SciShow News.