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11 Engrid Bergman 11 英格利褒曼 Playing nuns, saints and missionaries, Engrid Bergman became the Hollywood star everyone loved. 英格利褒曼,扮演过修女、圣女,成为人见人爱的好莱坞明星。 Bright, beautiful, pure as the d
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Batteries of the future need to deliver more energy, and they need to be smaller. Researchers at MIT think they have developed a technology that can, a
This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Common batteries are electrochemical cells. And they may get better thanks to living cells: the multicellular organism called brown algae. Lithium ion
A Better Way to Light Homes of People Off the Grid Whether you are on or off the grid, access to sufficient energy is a huge challenge for millions of people in sub-Saharan Africa. There is a reason for that, says Vijay Iyer, director of the World Ba