Jenny: He keeps asking me to sing. Yuling: He's probably excited to have a foreign girl in the car. Jenny: There've no singing taxi drivers in New York. Yuling: I heard a lot of New York drivers aren't from the U.S. Is that right? Jenny: A lot of them don't even speak much English. Yuling: But what if they don't understand your directions? Jenny: That happens. Let me tell you about this one time...
Energy comes to us from the sun in two main forms: heat and light. Solar thermal technologies use water or air to trap the sun's heat. On a small scale, this kind of solar power is already being used to heat homes, offices, and factories. On a large scale, it could be used to drive huge electricity-generating power plants.
