Safari Live - Day 129 | National Geographic

Johanna jogs along a straight path for (0 \leq t \leq 40). Johanna’s velocity is given by a differentiable function (v). Selected values of (v(t)), where (t) is measured in minutes and (v(t)) is measured in meters per minute, are given in the table above …

We were up at Cure, which is at the, uh, farthest island out in the chain. We were down at 300 feet in an area where we’ve documented every single fish. On this reef is a species known only from the Hawaiian Islands. It’s truly the most unique set of fish…

This is a chart showing estimated population around the year 1750 in the British colonies in the New World. I’ve arranged this more or less from north to south, and you can see that as you go farther south, the percentage of the population that was enslav…

In this video, we’re gonna look at trends for the periodic table of elements for dimensions like ionization energy, atomic and ionic radii, electron affinity, and electronegativity. To do so, we’re going to start with a very fundamental idea in chemistry …

[Music] I wear any brand. I wear glasses like wear nostril filters or not breathing. I mean, not when there’s a camera on me. [Music] I’m an artist. I draw large-scale landscape drawings that document Earth’s changing climate. I’m so moved personally by t…

[Music] Ah, what a lovely weekend in the neighborhood. Susan is out walking the dog. Frank is hard at work writing his new book, and Billy is, ah yes, a classic Billy Saturday—waking up late, his mind filled with dread. There are so many things he could d…