It may seem like there isn’t a lot going on in a baby’s brain. But as we continue to study them and our relationship with them, we begin to understand more about the complexities behind those big eyes, and this compilation takes a look...

In a rich conversation full of practical insights, former Prime Minister of Australia Julia Gillard and former Finance Minister of Nigeria Ngozi Okonjo-Iweala reflect on their experiences as women leaders in positions of global power --...

(NOTE: Statements in this talk have been challenged by scientists working in this field. Read "Criticisms & updates" below for more details.) Elaine Morgan was a tenacious proponent of a theory that is not widely accepted. The aquatic...

Scientists overwhelmingly agree that our climate is changing, Earth is getting warmer, sea levels are rising, and it's primarily because of humans putting lots of carbon dioxide in the atmosphere. Yet 4 in 10 Americans aren't convinced....

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. Is the War on Drugs doing more harm than good? In a bold talk, drug policy reformist Ethan Nadelmann makes an...

The healthcare industry in America is so focused on pathology, surgery and pharmacology -- on what doctors "do" to patients -- that it often overlooks the values of the human beings it's supposed to care for. Palliative care physician...

From poking their own eyes, to drinking a patient's vomit, some extremely passionate scientists have done pretty outrageous things to themselves in the name of science.

In this video Paul Andersen shows conceptual thinking in a mini-lesson on describing scale.


TERMS
Scale - the relative size or extent of
something
Objects - a material thing that can be s
een and touched
Phenomena...

Get the behind-the-scenes story from visual strategist Dan Goods about how a single question launched NASA's Jet Propulsion Lab into action at the beginning of the COVID-19 pandemic, propelling an unprecedented pivot from...

The fossil fuel industry knows how to stop global warming, but they're waiting for someone else to pay, says climate science scholar Myles Allen. Instead of a total ban on carbon-emitting fuels, Allen puts forth a bold plan for oil and...

TED talks about who makes judges?

Humans are no longer valued for our creativity, says media theorist Douglas Rushkoff -- in a world dominated by digital technology, we're now just valued for our data. In a passionate talk, Rushkoff urges us to stop using technology to...

Hank and PhD candidate Casey Massena go deep into the chemistry of a molecule that Casey helped create! Then Jessi joins the show to show off Ecuador, one of her many conures!

So, you know you'd like to get help with some problematic behavior (like fear of flying). What do you do? Who can you go to for help? Once you've gone, what can you expect? In this episode of Crash Course Psychology, Hank...

The coronavirus brought much of the world to a standstill, dropping carbon emissions by five percent. Al Gore says keeping those rates down is now up to us. In this illuminating interview, he discusses how the steadily declining cost of...

Most animals with a backbone possess a tail, and they use them for all sorts of purposes. There isn’t just one reason for having a tail, it all depends on what the animal is adapted for.

The enigmatic equation e^{pi i} = -1 is usually explained using Taylor's formula during a calculus class. This video offers a different perspective, which involves thinking about numbers as actions, and about e^x as something which turns...

Botanist Corneille Ewango talks about his work at the Okapi Faunal Reserve in the Congo Basin -- and his heroic work protecting it from poachers, miners and raging civil wars.

In today’s episode, Hank asks you to consider all the ways people talk about justice and what we really mean when we use that word. We’ll explain various theories of justice, just distribution, and different approaches to punishment.

A clever mechanical proof of Snell's law.

Neuroscientist Vilayanur Ramachandran outlines the fascinating functions of mirror neurons. Only recently discovered, these neurons allow us to learn complex social behaviors, some of which formed the foundations of human civilization as...

As the world faces recession, climate change, inequity and more, Tim Jackson delivers a piercing challenge to established economic principles, explaining how we might stop feeding the crises and start investing in our future.

Patricia Kuhl shares astonishing findings about how babies learn one language over another -- by listening to the humans around them and "taking statistics" on the sounds they need to know. Clever lab experiments (and brain scans) show...

* Viewer discretion advised. This video includes discussion of mature topics and may be inappropriate for some audiences. From our fear of women's bodies to our sheepishness around the word "nipple," our ideas about sex need an upgrade,...