The Science Of Acne Acne: the scourge of adolescence. Most people endure it at some point, and cant wait to be rid of the combination of whiteheads, blackheads, pimples, and pustules that comprise the skin condition that affects over 80% of teenagers...
What Makes White Gold White? Many people associate the metal gold with the color gold. But, some gold jewelry is not golden at all: its white. 图片1 Golden Color Gold is one of the heaviest and softest metals. Pure gold, called 24-carat gold, is so...
The Science Of The Siesta When you go back to work or class after lunch, why is it so hard to stay awake? Although we get energy from food, we also use lots of energy to digest it. Your energy use increases 25-50% as you digest a meal. With all that...
Why Dont Marks On The Surface Of The Moon Disappear? In 1969 when Neil Armstrong said Thats one small step, he made a lasting impression. On the moon, that is. Marks on the surface of the moon dont disappear the way marks on the Earth do; a great exa...
Why Do You Become Dehydrated When Sick? When you have a cold or flu, the doctor (or Dr. Mom) may tell you to drink lots of fluids. But did they ever explain why you need to guzzle all that water and juice? The extra fluid helps prevent dehydration, w...
In this Moment of Science Don tells Yael about another weight loss program. At least this one has some scientific validity, but don't count on losing a lot of weight this way. D: One thing you listene...
Tick-tock, tick-tock. Is that your biological clock? And if it is, are you female? Most people think biological clocks are strictly female phenomena, with infertility and the risk of certain diseases...
More and more women have began smoking in the last few decades. One of the reasons is savvy marketing as Don explains to Yael in this Moment of Science. D: Yael, what's that in your hand? Y: Come on,...
Yael: Don, are you eating my tulips? Don: Just having myself a little snack. Y: Of MY tulips? I brought those in here to brighten the place up, not for you to eat!And who eats flowers anyway? D: Have...
36 宇宙空间文摘 DATE=6-13-01 TITLE=EXPLORATIONS #1956 - Space Digest BYLINE=Paul Thompson VOICE ONE: This is Steve Ember. VOICE TWO: And this is Sarah Long with the VOA Special English program E...
