- [Joe] Thank you to DeleteMe for supporting PBS.
- [乔] 感谢 DeleteMe 对 PBS 的支持。
I wanna tell you a story about a lizard.
我想给你讲一个关于蜥蜴的故事。
This lizard lives in the desert, so sadly, it has no idea what an angler fish is.
这只蜥蜴生活在沙漠中，遗憾的是，它根本不知道琵琶鱼是什么。
And the angler fish, it's probably never even heard of land, much less lizards.
而琵琶鱼，它很可能从来没有听说过陆地，更不用说蜥蜴了。
And neither of these weird animals has any idea that a few chemicals swimming around in their bodies help some humans wearing funny coats invent one of the most important medicines of the 21st century.
而这些奇怪的动物根本不知道，它们体内游动的几种化学物质帮助一些穿着奇怪外衣的人类发明了 21 世纪最重要的药物之一。
But like most stories, this one isn't just about a fish or a lizard.
It's about something else too, about why we do science in the first place, about why people and governments come together to give money to scientists, and about what kind of questions scientists should ask about what kind of knowledge is most useful and how science can do the most good for the world.
(pensive music) Hey, smart people.
Joe here.
More than 40% of American adults today have obesity.
