scientific american - 2000 08 - global warming - the hidden health risk

... Oklahoma-northern Ark- ansas-southern Missouri, the north- ern part of the lower Michigan peninsula and most of the na- tion’s coastal areas. —Rodger Doyle (rdoyle2@aol.com) RODGER DOYLE The U.S. ... more malleable,” Owren theorizes. In the same way, when the men in the experiment laughed the most with other men, they were probably honoring the age-old tradition of the bu...

Ngày tải lên: 12/05/2014, 16:04

... SERVER CLUS- TER . These men are the defense the Blue Team in this high-tech version of capture the flag —and they lean back in their chairs confidently. This past March, they claim, their “agents” —computer ... years. Scientific American December 2000 53www.sciam.com Copyright 2000 Scientific American, Inc. fish-lizards. The smallest of these ani- mals was no longer than a human...

Ngày tải lên: 12/05/2014, 16:06

... to e-mail ad- dresses—fax to the number, and the document, including graphics and signa- tures, will appear in the recipient’s e-mail in-box. Received as a compressed graphic bit-map file, the ... surgeons would then direct the pellet through the brain by adjusting the forces of the various mag- nets. The pellet could tow a catheter, electrode or other device to minister to...

Ngày tải lên: 12/05/2014, 15:14

... forms the 0 and 1 of the de- vice the absence or presence of one ex- tra Cooper pair in the finger, which is then called a single-Cooper-pair box. The researchers test that their device has the ... peas- ant family to care for the three- and-a-half-year-old Mario. For a while, things went as well as they could in the mid- dle of a war. On the farm, the boy watched the whe...

Ngày tải lên: 12/05/2014, 15:58

... not seem to be the stuff of wild urban legend anymore. Neverthe- less, the rich mythology that has sprung up around the 840-acre island makes it a must-see stop on the con- spiracy theorist’s world ... pain —drugs in the same class as ibuprofen and aspirin. The McGeers, hus- band-and-wife neuroscientists at the Uni- versity of British Columbia, are betting on nonsteroidal anti-i...

Ngày tải lên: 12/05/2014, 16:03

... agreement with their erstwhile oppo- nents of the Civil War, the Southern plant- er merchant class: the industrialists would get a free hand in dealing with unrest in the North, and the Southern planter ... communi- cate through a house-wide wireless net. A radio-locating system can pinpoint any tagged object to within 10 feet. The two- gigabit-per-second connection to the uni-...

Ngày tải lên: 12/05/2014, 16:06

... failed nineteenth-century theory, and none of the pow- erful, mid-career European paleontologists of the early 1980s—and v ery few of the Americans, either—were going to allow the field to fall ... nontraditional. The old-school approach was the study of the fossils themselves: anything defective here, any morphology antiquated there, as I examined fos- sil after fossil over...

Ngày tải lên: 08/04/2014, 01:22

... the wom- en in the rural areas have that same cy- cle, and they teach the same values to their children. They teach their sons to order; they teach their daughters that they must serve even their ... in the geothermal record. Fur- thermore, although the warming of be- tween two and four degrees C is sub- stantially greater than the global average warming of the 20th centur...

Ngày tải lên: 12/05/2014, 14:49

... Witten com- ments. ÒThey also donÕt attempt to con- vey the importance of the ideas of phys- ics in mathematics.Ó JaÝe and Quinn have their support- ers. Richard M. Schoen, a mathematician at the Institute ... two infrared ones. The two photons are emitted si- multaneously, and the sum of their en- ergies exactly equals the energy of the parent photon. In other words, the col-...

Ngày tải lên: 12/05/2014, 14:50

... suggests that the Reagan ad- ministration seized on the radon issue in the mid-1980s to counter its anti- environment image. The issue suited Re- publicans, he contends, because home- ownersÑrather than ... it now sounds, the young Mayr was not a follower of Dar- win. Rather, like most other naturalists of the day, he subscribed to Jean-Bap- tiste LamarckÕs theory about the inhe...

Ngày tải lên: 12/05/2014, 14:57