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This is Scientific American's 60-Second Tech. I'm Larry Greenemeier. Got a minute?
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Lithium ion batteries power everything these days from smartphones to electric cars.
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They've been a great advance in portable power storage.
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On the downside, their spread also makes a big contribution to electronic waste dumps often found in developing countries.
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But IBM scientists in India may have come up with a way to decrease the numbers of discarded batteries while also bringing electricity to underserved parts of the world.
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They developed an experimental power supply, called the UrJar, consisting of reusable lithium ion cells salvaged from three-year-old laptop battery packs.
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For a study of the technology, the researchers enlisted street vendors who had no access to grid electricity.
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Most users reported good results.
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Several of them used the UrJar to keep an LED light going for up to six hours daily.
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For one participant, the power supply meant keeping the business open two hours later than usual.
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IBM presented its findings the first week of December at the Symposium on Computing for Development in San Jose, California.
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The UrJar isn't ready for the market quite yet.
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But it shows that one person's trash could literally light up someone's life halfway around the world.
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Thanks for the minute, for Scientific American's 60-Second Tech. I'm Larry Greenemeier.
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1 / 14
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显示原文 =This is Scientific American's 60-Second Tech. I'm Larry Greenemeier. Got a minute?
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2 / 14
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显示原文 =Lithium ion batteries power everything these days from smartphones to electric cars.
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3 / 14
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显示原文 =They've been a great advance in portable power storage.
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4 / 14
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显示原文 =On the downside, their spread also makes a big contribution to electronic waste dumps often found in developing countries.
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5 / 14
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显示原文 =But IBM scientists in India may have come up with a way to decrease the numbers of discarded batteries while also bringing electricity to underserved parts of the world.
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6 / 14
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显示原文 =They developed an experimental power supply, called the UrJar, consisting of reusable lithium ion cells salvaged from three-year-old laptop battery packs.
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7 / 14
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显示原文 =For a study of the technology, the researchers enlisted street vendors who had no access to grid electricity.
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8 / 14
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显示原文 =Most users reported good results.
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9 / 14
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显示原文 =Several of them used the UrJar to keep an LED light going for up to six hours daily.
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10 / 14
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显示原文 =For one participant, the power supply meant keeping the business open two hours later than usual.
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11 / 14
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显示原文 =IBM presented its findings the first week of December at the Symposium on Computing for Development in San Jose, California.
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12 / 14
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显示原文 =The UrJar isn't ready for the market quite yet.
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13 / 14
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显示原文 =But it shows that one person's trash could literally light up someone's life halfway around the world.
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14 / 14
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显示原文 =Thanks for the minute, for Scientific American's 60-Second Tech. I'm Larry Greenemeier.
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- 单句循环：关
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