Lightning Helps Fertilize The Soil Our bodies need protein, and proteins contain nitrogen. The air we breathe has plenty of nitrogen to satisfy our needs. Butthat nitrogen is not available to us directly from the air. The only way we can get nitrogen...
Why Is It So Difficult To Spot A Plane In The Air? How many times have you heard a jet plane going over, looked up to see it, but not been able to find it even though you were looking toward where the sound was coming from? Well, this moment of scien...
Noise Pollution Is Affecting Whales If a noisy neighbor is blasting music at all hours of the day and night, drowning out your phone conversations and interrupting your sleep, you can call the police. But what is a whale to do? Natural noise from wav...
Volcanos and Water Firefighters use water to battle a towering inferno.You might wonder if water could also stifle an erupting volcano. Actually, this experiment happens every time a volcano erupts at the bottom of the ocean. What happens when a volc...
Racial Stereotypes and Memory Although there has been much debate about whether race has a biological or social basis, the bottom line is that race is a psychological reality for many people. That is, many folks assign other individuals to racial cat...
A Stationary Satellite, part 2 A geostationary satellite orbitsthe planet at the same rate as the planet rotates, so the satellite is always over the same patch of ground. Cool! you say. Id like to have one of those about twenty feet over my house. S...
A Stationary Satellite, part 1 Some of the best devices in science have been anticipated by science fiction writers years before they existed. Occasionally a writer comes up with an idea that can be put into practice within their lifetime! Such is th...
Farewell to Arms 对扶手说再见 Good afternoon, this is your captain speaking. We are at cruising altitude and will be in flight for another three hours, so youd better get comfortable. That means figuring out who gets the arm rest you, or your n...
Out for the Count 失去知觉之后 If youve ever had major surgery, you probably remember lying down and waking upbut nothing in between. Thanks to the anesthesiologist, during the actual surgery you were out of it: immobilized and insensitive to p...
Fish ad 鱼的招亲广告 Today we're looking at fish single's ads, let's see--- single fish female seeks good father to help with eggs. Come on, don't be serious. Fish don't place ad in a paper, plus I thought a common assumption in biology is that...