Good news for fans of Venus - last week, NASA announced two new missions to learn more about our planetary neighbor! And this week, NASA's Juno mission sent back a treasure trove of data about Ganymede - the largest moon in our solar...

James Cameron rocketed onto the action film scene with 1984's "The Terminator" and followed that up with a highly anticipated sequel to the 1979 film, "Alien." His film, "Aliens," would go on to not only be a financial success, but a...

How do fast-paced video games affect the brain? Step into the lab with cognitive researcher Daphne Bavelier to hear surprising news about how video games, even action-packed shooter games, can help us learn, focus and, fascinatingly,...

How much more damage do we have to endure before we realize that it's cheaper to save this planet than to ruin it? asks engineer and investor John Doerr. In conversation with Countdown cofounder Lindsay Levin, Doerr and systems innovator...

In this gripping talk, lawyer Jason McCue urges for a new way to attack terrorism, to weaken its credibility with those who are buying the product -- the recruits. He shares stories of real cases where he and other activists used this...

The climate crisis is too vast and complicated to solve with a silver bullet, says author David Wallace-Wells. What we need is a shift in how we live. Follow along as he lays out some of the dramatic actions we could take to build a...

SciShow debunks the myth that you only use 10 percent of your brain. So, how much do you really use? And how do we know?

What if human flight wasn't just the stuff of epic comic book stories? Is it scientifically possible to fly? In this series, Joy Lin tackles six superpowers and reveals just how scientifically realistic they can be to us mere mortals.

If we can unlock the full potential of our cities, we can minimize the price the planet pays for hosting us in our growing numbers, says Marvin Rees, the Mayor of Bristol, UK, who understands deeply how cities can help (or hurt) the...

Around 1917, an unknown illness dubbed "sleeping sickness" caused people to suffer severe sleepiness and delirium. Some even became paralyzed for decades until a temporary cure was discovered in the 1960s. The story of this illness is...

Shielded by our thick skulls and swaddled in layers of protective tissue, the human brain is extremely difficult to observe in action. Luckily, scientists can use brain organoids - pencil-eraser-sized masses of cells that function like...

Days before this talk, journalist Naomi Klein was on a boat in the Gulf of Mexico, looking at the catastrophic results of BP's risky pursuit of oil. Our societies have become addicted to extreme risk in finding new energy, new financial...

Zaria Forman's large-scale compositions of melting glaciers, icebergs floating in glassy water and waves cresting with foam explore moments of transition, turbulence and tranquility. Join her as she discusses the meditative process of...

Brit Garner is here to give Hank a breakdown of the May 2019 preview of the IPBES report, and Jessi from Animal Wonders brings along Kizmit, the African Crested Porcupine.

Investing in green energy, holding large corporations accountable for their pollution, stopping pipeline and oil extraction initiatives -- these are non-negotiable actions to protect the planet, but they are still just the bare minimum,...

What would you do if your hand seemed to develop a mind of its own, beyond your control?

Pat Mitchell has nothing left to prove and much less to lose -- she's become a "dangerous woman." Not dangerous as in feared, she says, but fearless: a force to be reckoned with. In this powerful call to action, Mitchell invites all...

The UN's Intergovernmental Panel on Climate Change released the final part of its sixth assessment report. In it, they steer away from the gloom and doom and remind us of a future that's still remarkably possible.

The hard choices -- what we most fear doing, asking, saying -- are very often exactly what we need to do. How can we overcome self-paralysis and take action? Tim Ferriss encourages us to fully envision and write down our fears in detail,...

As you surf the Web, information is being collected about you. Web tracking is not 100% evil -- personal data can make your browsing more efficient; cookies can help your favorite websites stay in business. But, says Gary Kovacs, it's...

*Yaaawwwwwn* Did just reading the word make you feel like yawning yourself? Known as contagious yawning, the reasons behind this phenomenon have been attributed to both the physiological and psychological. It's been observed in children...

Mastering any physical skill takes practice. Practice is the repetition of an action with the goal of improvement, and it helps us perform with more ease, speed, and confidence. But what does practice actually do to make us better at...

We're not going to end violence by telling people that it's morally wrong, says Jamila Raqib, executive director of the Albert einstein Institution. Instead, we must find alternative ways to conduct conflict that are equally powerful and...

Have you ever wondered why your face turns red when you’re angry? Check out this SciShow Quick Question to learn why!