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| U.S. PUSH FOR DIESEL POSES RISK TO PUBLIC HEALTH, SCIENTISTS SAY. |
| Diesel fuel is now at the center of a delicate balancing act between smog production and global warming. Some lawmakers and car manufacturers advocate widespread diesel use in passenger vehicles as a strategy for reducing the production of so-called ''greenhouse gases'' thought to cause global warming. But according to a new study, replacing gasoline vehicles in the United States with diesel vehicles - equipped even with the most modern pollution controls - may increase smog production over most of the country. |
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| SPIDERS WEAVE A WEB OF LIGHT |
| WHAT do you get if you give a delicate thread of spider's silk a glassy coating- and then extract the silk by baking? Yushan Yan reckons you will solve a major problem in photonics: how to make ultra-thin, hollow optical fibres narrow enough to carry light beams around the fastest nanoscale optical circuits. Using this technique, Yan and a team of engineers from the University of California at Riverside say they soon expect to be able to make hollow fibres with cores just 2 nanometres wide- or 50,000 times thinner than a human hair. |
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| NEW TECHNIQUE TRANSMITS DATA AT 2.8 GIGABITS PER SECOND |
| A test conducted by two Chicago computer scientists to push trans-Atlantic high-speed data transmission has resulted in a new top speed of 2.8 gigabits (billion bits) per second. |
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| WATER QUALITY WAS ISSUE IN ANCIENT ROME, SAYS SCHOLAR. AQUEDUCTS WERE TECHNOLOGICAL AND ENVIRONMENTAL MARVELS. |
| Can the great technological feats of the early Romans still inform urban planning today? Professor Christer Bruun of classics says they can in the area of water conservation. |
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| DEVICE COULD MAKE FOR FASTER INTERNET, BETTER TELECOMMUNICATIONS |
| Whether you're waiting for a computer to download the latest movie trailer, or just holding for a long-distance phone call to connect, you may one day get faster service as the result of a new device invented by Ohio State University engineers. |
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| COMPUTERS CLOSER TO THE SPEED OF LIGHT |
| Australian scientists have used their expertise in solar cells to develop a more efficient silicon light-emitting diode, providing a new platform for faster computing and data transfer.
The development, reported in 23 August 2001 Nature by Martin A. Green and colleagues at the University of New South Wales, will mean microelectronics can take better advantage of the speed of optical data transfer. |
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| THREE MAJOR LABS JOIN FORCES TO DEVELOP FASTER SEMICONDUCTORS |
| Scientists at Oak Ridge National Laboratory (ORNL), Motorola Labs, and Pacific Northwest National Laboratory (PNNL) have entered a cooperative research and development agreement (CRADA) aimed at increasing the speed of future generations of integrated circuits. |
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| DEVICE OFFERS PROMISE FOR FASTER OPTICAL COMMUNICATIONS |
| WEST LAFAYETTE, Ind. – Purdue University engineers have discovered that a device commonly used to untangle signals sent over fiber optic lines might ultimately be used to make the Internet faster and more powerful. |
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Transportation & communications
