科學(xué)60秒:短袖白大褂 抗菌無(wú)用處╮(╯▽╰)╭

Good news for chilly doctors—you can wear long sleeves with ___1___ inside hospitals. Because University of Colorado researchers find that docs pick up just as much bacteria when ___2___ as they...

科學(xué)60秒:人類(lèi)的大腦到底進(jìn)化了多少？

Modern human babies are essentially learning machines. After birth, their brains grow in ___1___, allowing infants to ___2___ for future social and cognitive achievement. But it wasn’t that way ...

平衡使用肥料(1)

Hints: Sub-Saharan Africa Cornell University in IthacaLaurie DrinkwaterThe researchers say farming methods in Sub-Saharan Africa need to improve or else poor quality soil will increase rural pove...

外國(guó)學(xué)生：警惕“假文憑”(1)

George Washington University Medical SchoolThis week, in part 7 of our Foreign Student Series, we talk more about accreditation of American colleges and universities. To become accredited, progr...