布什回国(2)

科学60秒:海藻之于电池的神奇功效

Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion batteries include a binder. It holds the g...

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...

(笑话)愚蠢的命令

笑话Stupid Orders When Nasreddin was a boy, he never did what he was told, so his father always told him to do the opposite of what he wanted him to do. One day, when the two were bringing sa

朝鲜核武会谈有望重开(2)

美国务卿助理希尔称美朝核武会谈有望重开Hill says the hard technical effort of getting the money from point A to point B has been accomplished, and that Washington now expects Pyongyang to honor it...