Stars have cores hot and dense enough to force atomic nuclei together, forming larger, heavier nuclei in a process known as fusion. In this process, the mass of the end products is slightly less than the mass of the initial atoms. But...

TED is on a mission to discover and champion the ideas that will shape tomorrow. Reflecting on the evolution of that mission, TED's Chris Anderson and Monique Ruff-Bell cast a visionary gaze on the organization's future — including a...

January babies, rejoice! This month's SciShow Rocks Box video is the story of garnets, and how these fabulous gemstones help us solve geological mysteries, from the Italian Alps to the Himalayas.

*At the time this video was made, it had been reported that Charlotte the round ray was pregnant. However, new information has come out that she was never pregnant with parthenotes, and in fact had a reproductive disorder, which is a...

You'd think that there are some features that, once an animal group evolved to have them, could never really go away, right? Well, Stefan is joined today by hosts from PBS Eons, Journey To The Microcosmos, and Bizarre Beasts to break...

Alaska has the most volcanoes out of all the US states, but researchers think they don't have enough. Here's the weird science behind looking for Alaska's volcanoes, and what we've learned about volcanism along the way.

For years, scientists couldn't solve the mystery of strange pits on the floor of the North Sea. Initially they blamed methane seeps, but it seems like the pits were actually made on porpoise.

Malaria vs. Neurosyphilis: the story of an unethical experiment, and its mysterious conclusions

Paul Andersen introduces Anatomy and Physiology in this podcast. He starts by describing how the form of an object fits the function. He then explains the themes of homeostasis and hierarchy. He describes the four major types of...

The James Webb Space Telescope is the most ambitious space observatory ever launched, and nobody hyped it more than us. So is it putting in work? Oh, boy, yes. Yes it is.

When we think of the ocean and what's in it, you probably think of stuff like fish, or salt, or seaweed. But there's a crystal that is so vital to marine life that they take dissolved materials in that salty water and build it...

SciShow Space takes you to the moon! Learn about the competing theories about how Earth's closest neighbor formed.

SOFIA or The Stratospheric Observatory for Infrared Astronomy is coming to an end, but let's look back on some of the amazing discoveries of this flying telescope.

Dark Matter is the most abundant form of matter in the known universe, so what's keeping it from forming into planets?

If you’ve been distracted looking at the amazing photos The James Webb Space Telescope has taken, not to worry. Here are three other stellar stories from the last year of space science!

R136a1 is the most massive star that astronomers have ever discovered. It's so massive you might think the laws of physics wouldn't allow it. But it turns out that its current mass estimate is actually so low that it threatens our...

Space is a dangerous place. One of the many dangers comes in the form of radiation. On Earth, sunscreen helps shield our bodies. But astronauts on the ISS, or eventually on the Moon/Mars/etc., will have to be rocking some suped-up sunblock.

The laws of physics don’t specify an arrow of time - they don’t distinguish the past from the future. The equations we use to describe how things evolve forward in time also perfectly describe their evolution backwards in time. So the...

Life exists in our universe. There we go - one hopefully uncontroversial statement. Therefore our universe is capable of producing and supporting life. How am I going? Two for two? Let’s try for three: therefore there are countless...

Einstein once asked whether “the moon exists only when I look at it?". It was rhetorical objection to the idea that measurement in quantum mechanics causes reality to become real. But there was a time when the moon didn’t exist, and then...

If a photon leaves the train station shortly after the Big Bang ...

Black holes are really only dangerous if you get too close. Ha, who am I kidding. It turns out they may be responsible for ending star formation across the entire universe.
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When we first realized that black holes could have...

Mercury, Venus, and Mars are all super low on water – so where did ours come from and why do we have so much of it? We think our water came from a few unlikely sources: meteorites, space dust, and even the sun.

How is it possible to have cataclysmic eruptions without any real cataclysm?