Word: carbons
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Dates: during 1990-1999
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...nanotweezers have two carbon tubes that can grasp molecules...
...tweezers consist of two carbon nanotubes connected to electrodes on nanometer-sized glass tubes. Voltages applied to the electrode open and close the tweezers, allowing them to pick up and drop molecules...
According to the Science paper, carbon nanotubes are suitable for building blocks of the tweezers because they continue to be tough and to conduct electricity at very small sizes...
...Carbon dioxide and other gases from the burning of fossil fuels collect in the atmosphere and act like the glass walls of a greenhouse, trapping heat on the earth's surface. Scientists predict that the planet's average temperature could rise as much as 6.3[degrees]F (3.5[degrees]C) over the next century, and we are already seeing heat waves, melting polar ice and rising seas. Local impact remains unpredictable: some areas could suffer stronger storms and other places severe drought. Seven environmental groups--Environmental Defense Fund, Natural Resources Defense Council, Sierra Club, Union of Concerned Scientists, U.S. Public...
...course, the creative, intelligent computer has done far better in capturing the public imagination than have its unexciting number-crunching counterparts. A world in which computers were as creative as humans would seem to leave the poor carbon-based creatures little room to excel, especially if their silicon rivals continued to increase in speed and capacity for processing information at an exponential rate. What would the humans do in a world where their machines outsmart them...