科學60秒:能“識物”的晶片
What's the best way to find out if an contains a specific substance, like an environmental contaminant? You could use an expensive, bulky gas chromatograph—but Harvard researchers have develope...
背誦美文——兒童的數(shù)學能力
Children’s Numerical SkillsPeople appear to be born to compute. The numerical skills of children develop so early and so inexorably that it is easy to imagine an internal clock of mathematical m...
文化:古巴的免費音樂會
文化:古巴的免費音樂會As many as a million Cubans are said to have attend the free concert in Havana’s revolution square that featured some of the Latin America’s most popular musicians. Many i...
黃石公園的老忠實噴泉
短文In Yellowstone National Park you can visit the geyser Old Faithful. It’s a spectacular sight, as each four-minute-long eruption sends boiling water over a hundred and fifty feet high. On ...