Satya Nadella on the journey to becoming Microsoft's CEO & reimagining technology's impact

Hi everyone, Sal Khan here from Khan Academy. Welcome to the Homeroom live stream! It’s been a little while since we last saw each other, so it’s so good to see you again. We have an exciting conversation today with David Siegel, who’s a co-chair, co-foun…

Well, the first couple of months of the lockdown, I was just kind of bummed out. It was like March, April; I wasn’t sleeping that well. You know, there’s so many places I need to go and couldn’t go anywhere. This is National Geographic photographer Joel S…

Since the Industrial Revolution, humans have released over 1.5 trillion tons of carbon dioxide or CO₂ into the Earth’s atmosphere. In the year 2019, we were still pumping out around 37 billion more. That’s 50 percent more than the year 2000 and almost thr…

Once upon a time, a group of hedgehogs faced the cold winter. As they were feeling cold, they decided to move closer to each other and share bodily warmth. Unfortunately, as soon as they crawled together, they hurt each other with their sharp spines. And …

[Instructor] What we want to do in this video is figure out what two divided by 0.4 is, or two divided by 4⁄10. So why don’t you pause this video and try to figure out what it is. And as a little bit of a hint, think about two on the number line and thi…

I don’t have heroes; a hero’s a big word. There are people that I look up to, and I’ve learned a lot from, and Matt Ridley has got to be near the top of that list. Growing up, I was a voracious reader, especially reading science. Matt had a bigger influen…