The history of life on earth has been a history of interaction between living things and their surroundings. To a large extent, the physical form and ...
The computer virus is an outcome of the computer overgrowth in the 1980s．The cause of the term "computer virus" is the likeness between the ...
The Wonderful Structure of a Microcomputer In Chinese, a computer is popularly known as an " electrical brain", for the working process of a...
Sandstorms and the dust and gases from volcanoes pollute the earth's atmosphere naturally. But the most serious kind of air pollution comes from p...
Amber: Window to the Past 琥珀:通向过去的窗口Amber is a form of tree resin(琥珀是由树脂形成的) -- exuded as a protective mechanism against disease and insect infestatio...
Mount EtnaSicily's greatest natural attraction is also its highest mountain. To the ancient Greeks, Mount Etna was the realm of Vulcan, god of fir...
Deep trouble. Methane bubbles from a tar-covered oil seep in the Santa Barbara Channel.背景资料以往我们一听到温室效应，第一直觉都会联想到二氧化碳。但是越来越多的研究指出，甲烷对温室效应的影响，是超乎我们之前所想像...
Alaska's North Slope Sees Its Biggest Oil Spill Alaska officials said Friday that up to 267,000 gallons of crude oil poured out of a pipeline at t...
Lost lakes.Two new lakes found under an Antarctic ice sheet rival Lake Vostok (pictured) in size.Credit: M. Studinger Frozen Land O' LakesBy Mas...
How High the Moon月亮有多高Tom Murphy wants to know how far it is to the moon. Not just how many miles, or how many feet, or even how many inches.Tom Murph...