常速英语

Keywords:

You’ve heard the numbers: More than half of the world’s people now live in cities, and in just a few decades more than two thirds of the globe’s rapidly growing population will be urban. Because citie...

Keywords:

So the little pink protein is ubiquitin and our yellow protein here is ataxin-1. For ubiquitin to be carried to proteins it needs a carrier, it's called the ubiquitin carrier enzyme. Once our ataxin h...

Keywords:

Hawaii sits in the middle of the Pacific Ocean, and nowhere near the edge of a tectonic plate where volcanoes are usually found. So how did the island chain form, with all of its volcanoes? The islan...

Keywords:

But you also know that viruses are sub-microscopic. They're exceedingly small. Let me give you some sense of the scale that we're talking about here in more human terms. Let's imagine that I am...

Keywords:

Researchers train high-speed video on schooling fish to track the motion of each individual, revealing how information and decisions travel through the group. Collective behavior is embodied in swa...

Keywords:

To illustrate the role of the Per's (period) and Cry's (cryptochrome). So what we have here are BMAL and CLOCK which are the positive activators actually of a set of at least 5 genes. All three Per ge...

Keywords:

It’s the end of an era, more than a billion kilometers from Earth this week as the Cassini spacecraft plunges to its fiery death in the clouds of Saturn. I’m Mike Lemonick. Lee Billings: And I’m Le...

Keywords:

So I now have an animation to give you a flavor for not only the emergence from the pupal case but actually the locomotor activities, which are also affected. So here's a fruit fly in a tube, and that...