Safari Live - Day 337 | National Geographic

From a distance, it always seems impossible. But impossible is a place we haven’t been to yet. Impossible is what beckons us to go further, to explore. It calls us from the wild, lures us into the unknown, asks us to dig deeper, to look at things from new…

Garans, I would like to tell you a Tale of Two Elephants in order to get at the idea of this thing called the article, and we’ll explain what that is after I tell you about the elephant and an elephant. Now, articles are words like a, or an, or the. Arti…

Hello grammarians! Hello Rosie! Hi David! So today we’re going to talk about a special kind of dependent clause, which again is a kind of clause that can’t be a sentence on its own, called a relative clause. A relative clause is a dependent clause that s…

[Music] [Music] [Music] [Applause] [Music] Ah, this might be the most exciting part of the entire day! I have to say that for many of you, you’re probably here for this highlight. And of course, I was taken out backstage and accosted our next speaker to …

A polyprotic acid is an acid with more than one proton that it can donate in solution. An example of a polyprotic acid is the protonated form of the amino acid alanine. Here’s a dot structure showing the protonated form of the amino acid alanine, and we c…

There’s nothing worse than a sleepless night. We’ve all been there, tossing and turning. You focus all your mental power on trying to fall asleep. With all your will, you force yourself to shut your eyes, turn your brain off, and pray to be whisked away i…