Safari Live - Day 42 | National Geographic

As we’ve talked about in other videos, by the time we get into the 15th century, Timur’s Persia and Central Asia has been fragmented. You have many of Timur’s descendants with their own kingdoms, especially in Central Asia. In 1483, in the Central Asian c…

We’re told Della wants to make a one-sample z-interval to estimate what proportion of her community members favor a tax increase for more local school funding. She wants her margin of error to be no more than plus or minus two percent at the 95% confidenc…

On November 22, 2014, a burst of x-rays was detected by ASASSN—that’s the All Sky Automated Survey for Super Novae. But this was no supernova. The signal came from the center of a galaxy around 290 million light-years away, and what we now believe happene…

What’s up you guys? It’s Graham here. So yeah, I did a thing last night. After watching non-stop videos, reading non-stop articles, and researching every aspect of this fine, odd piece of machinery, I decided to reserve a spot to order the upcoming Tesla …

So much of Piketty’s book is about this idea of more, more, and more returns to capital. That the return to capital is going to grow faster than the growth of the economy. We see charts like this, where we have the value of private capital as a percentage…

Is there a border we will never cross? Are there places we will never reach no matter how hard we try? It turns out there are. Even with sci-fi technology, we are trapped in a limited pocket of the universe and the finite stuff within it. How much univers…