肺结核研究的新进展 (2)
ELISpot
Daniel Hoft
Missouri
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科学60秒: “身负重任”的中世纪盔甲
Medieval armor certainly looks heavy. And now researchers have demonstrated how the protection might have put its wearers at a heavy disadvantage on the battlefield. An armored combatant in the...
厨房飘着的云朵
短文Fill a kettle with water, then turn on the burner. In a while, your kettle will start belching white billowy stuff into the air. What is this stuff? Steam? Actually, no. Steam is water ...
肯尼亚乡村可上网 (2)
Ann ArborThomas Zurbuchen The project began back at the College of Engineering in Ann Arbor, Michigan, in 2007. That was when 25 students in a class taught by Thomas Zurbuchen first talked about ...
布什回国(2)
布什从八国峰会回来,面对一团乱麻的国会,怎么办?The president says he knows it is a tough debate, but he is still optimistic about getting the bill through. "I believe we can get an immigration b...