How did life on Earth get started? Did life on Earth originate on another planet? Either Mars, or in a distant solar system? Could Earth life have spread to have seeded life elsewhere? Let's see what modern science has to say about the...

Learn why jaundiced babies have yellowish skin and eyes for the first few days after they're born and how the ancient Greeks thought birds could help cure the affliction (spoiler: they were super wrong).

What if every home had an early-warning cancer detection system? Researcher Joshua Smith is developing a nanobiotechnology "cancer alarm" that scans for traces of disease in the form of special biomarkers called exosomes. In this...

Emily Graslie joins us to share the wonder of how shoulders, humble as they may be, have played a huge role in the evolution of mammals the world over. Thanks to the Museum of Comparative Zoology at Havard and The Field Museum for...

When it comes to sparkly objects, the planet Earth has a lot to offer. Here are 5 especially awesome glasses made by nature!

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In this video Paul Andersen explains the different forms and units for energy. A discussion of the laws of thermodynamics is also included. Sample conversion problems using dimensional analysis is also included.

Jessi and Squeaks found a branch growing what looked like white hair! So they brought the branch back to the Fort to run some tests and found out that it isn't hair at all... it's ice!



Second Grade Next...

Howard Rheingold talks about the coming world of collaboration, participatory media and collective action -- and how Wikipedia is really an outgrowth of our natural human instinct to work as a group.

Plants! If oxygen and good smells aren't enough for you, here's a collection of episodes that might win you over.

The results are in from the neutron star collision this past August! Astronomers are revealing what they've learned so far, with more pure gold research underway!

We get it, learning so many different organic reactions is probably giving you a headache, but hopefully this episode can help! We’re getting even deeper into carboxylic acid derivatives, some of which are used in common headache...

When ultraviolet sunlight hits our skin, it affects each of us differently. Depending on skin color, it'll take only minutes of exposure to turn one person beetroot-pink, while another requires hours to experience the slightest change....

In 1987, thousands of people gathered in Saudi Arabia for the annual Hajj pilgrimage. But what started out as a celebration led to a worldwide health crisis: more than 2,000 cases of meningitis broke out, spreading across Saudi Arabia...

Every year, the world uses 35 billion barrels of oil. This massive scale of fossil fuel dependence pollutes the earth, and it won't last forever. On the other hand, we have abundant sun, water and wind, which are all renewable energy...

Hank explains the whole story about radiation - the good, the extremely helpful, and the bad.

From fire to food, check out these life-altering reactions that surround us everyday.

In which Mike Rugnetta continues our unit on pantheons with the complex Indian pantheon, focusing on stories that were written in Sanskrit. We start with a violent creation story. We talk about the concept of Brahman, and the...

Today we’ll dive further into fluid flow and how we can use equipment to apply our skills. We explain Bernoulli’s Principle and the relationship between speed and pressure in certain flowing fluids. We’ll also discuss how to apply the...

Do you just hate those little bumps all over your nose? Don't be a hater, they're just doing their job! Learn how in this SciShow Quick Question.

John Green teaches you about Virginia Woolf's modernist novel, To the Lighthouse. Let's face it. You're not reading To the Lighthouse for the plot. There's not a whole lot of plot, unless you count the tension about the beef stew. You're...

Everyone is familiar with Twitter, the uber-popular micro-blogging site, which limits the user to 140 characters. The tweet is perfect for sharing your favorite links and updating the world about your life, but it might also be the...

Water travels... a lot. In fact, the water cycle is amazing and takes water all over the planet by using evaporation, condensation, and precipitation. In this episode of Crash Course Kids, Sabrina shows us how the water cycle works and...

Steven Pinker's book The Blank Slate argues that all humans are born with some innate traits. Here, Pinker talks about his thesis, and why some people found it incredibly upsetting.

After taking you on a journey through geologic time, we've arrived at the Cenozoic Era. Most of the mammals and birds that you can think of appeared during this era but perhaps more importantly, the Cenozoic marks the rise of organisms...