7月13日CNN聽力：老鼠愛聽音樂 激發莫紮殊效應
And around March and September, the equinoxperiod also a good time to see it.
And hence why it's a good time right now.
If you have the possibility, get outside and take alook.
Back in high school, some of my teachers would playclassical music to help us learn.
Did it work?
Well it does in rats.
A study in the late 1990s found that rats that repeatedly heard the music of Mozart were betterat finding their way through mazes than rats who didn't.
Music from minimalist composers like Philip Glass or just plain white noise did not have thesame effects.
Doves are helping a U.S.-based company map the world-not the birds.
Though these doves aren't much bigger, they operate much higher-about as high as theInternational Space Station, hundreds of miles over our heads.
They cost less than conventional satellites, but they don't last much longer than a year beforethey burn up in the atmosphere.
Still, businesses are taking notice.
Earth as seen from the surface of the moon.
Moving closer and it still looks much the same.
What you don't see from either distance is that our planet is constantly changing.
We haven't kept a close satellite eye on all this.
Well, that's about to change.
There's a company here in San Francisco with an ambition that's out of this world-to map theEarth like it's never been mapped before.
We've invented a miniaturized satellite that allows us to build the world's biggest constellationof Earth imaging satellites.
Chris Boshuizen is a physicist who's always been fascinated by space.
After developing several satellites for NASA, he set up a company with two friends on ChristmasDay, 2010.
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