Mark Zuckerberg on Taking Risks and Finding Talented People

We have two ears and one mouth, so we should listen more than we say. Zeno of Citium, around 300 BC, founded the Stoic school of philosophy. He published a list of works on ethics, physics, logic, and other subjects, including his most famous work: Zeno’…

Hello! Looks like we are live. Uh, hello everyone! Sal here from Khan Academy. Welcome to the daily homeroom. For those of y’all that this is the first time that you’re joining, this is really a way to connect and, uh, realize that we’re all part of a glo…

[music playing] NARRATOR: September, 1944, south-east of Japan, USS Finback steams toward the crash site of an American plane. 10 miles away, a young pilot drifts towards the shores of a Japanese island from which enemy ships set out towards him. [music …

[Narrator] While dinosaurs roamed the Earth and pterosaurs ruled the sky, sea monsters called ichthyosaurs dominated the world’s oceans. Ichthyosaurs were ancient reptilian predators. They first appeared about 251 million years ago during the Triassic Per…

Nitrogen is everywhere. It’s a fundamental building block of life. It makes up 78% of the atmosphere, and it’s in these tiny micro bubbles, in my Starbucks ‘Nitro-Cold Brew.’ And yes, this episode is sponsored by Starbucks. They challenged me to liquify n…

I want to do a quick clarification on the video on alcohols. In one of the videos, I gave this example of this alkanol right over here. It has a triple bond between the five and six carbons, and I just want to clarify that in reality, it would not ever be…