Safari Live - Day 42 | National Geographic

What happens when you take the world’s best night vision goggles into the world’s darkest room? You start to feel a little strange. And sometimes start to get a little bit of vertigo. Can you tell the difference between your eyes being closed and open? Sh…

Let’s say we have some type of hard flat frictionless surface right over here. That’s my drawing of a hard flat frictionless surface. On that, I have a block, and that block is not accelerating in any direction; it is just sitting there. Let’s say we kno…

Honeybees are our most efficient and effective pollinators, so they pollinate lots of fruits and vegetables. We’ve invited a classroom full of DC kids to come down here and put on the bee veil and a bee suit for protection. Uh, we’ll open up beehives and …

Natural selection only cares about what’s adaptive. Both true and false beliefs can be adaptive as long as they increase an animal’s chance of survival. Why should we expect natural selection to favor true adaptive beliefs over false ones? Alvin Plantinga…

(Dramatic orchestral music) - Imagine you’re out in Africa. It’s night-time, you’re sleeping in the back of an open vehicle, and it’s so hot that you have no clothes on and you’re still sweating. All you can hear is the distant call of a hyena and an impa…

DRO, those thoughts out there, all thought out for sure. Yeah, they’re all thought out, they need working on now. There’s freezing outside; it’s good to clear the freezer of all the caribou we’ve got. How we put some more fish in. They’re gonna have to l…