20
POPSIs a zero-carbon city on the horizon? As part of their Masdar Initiative (masdar meaning "the source" in Arabic), an effort to further the research and implementation of sustainable construction, the Abu Dhabi government will build this city on a nearby 2.3 square-mile site (six square kilometers), adjacent to its international airport at an estimated cost of $22 billion. It projected the city will eventually be able to sustain 50,000 residents and more than 1,000 businesses. It broke ground in construction of the city and hopes to complete the project by 2016.
19
POPSHumans are endangered while ignorant of truth and reality. There are a number of links,which are to different fields. Some information be fact, some can be philosophical, or speculative, but it will modify any opinion. Any fact doubted should be verified but these days people are learning to do that as a matter of course. If we're going to get out of this hole, we n eed a bigger ladder.
19
POPSSocial Networking for Zebras Ecologists have turned to computer scientists to develop dynamic graphs of social behavior among Zebra populations, revealing why some are thriving while others are endangered: The difference showed that the Grevy's zebras tended to hang out in cliques, whereas the onagers spent time with different buddies on different days. The methods developed turn out to applicable to human networks, too: In the meantime, Berger-Wolf is testing her methods on other datasets, including the records of e-mails exchanged at Enron that became available after they were subpoenaed. She has found some surprising connections between the two kinds of networks. "We can see that our method to detect when a lion was in the area of zebras detects very well when the subpoena was issued at Enron," she says. When faced with a lion, the zebras flee and follow one lead zebra. Similarly, after the subpoena was issued, e-mail traffic to the lawyers increased dramatically.
13
POPSWhat is the worst environmental disaster in history? Despite the relatively small amount of oil released, several factors contributed to the spill's severity: timing, location, abundance of wildlife and substandard cleanup efforts. In comparison, one of the largest oil spills in history, the rupture of an oil well in the Gulf of Mexico that released 140 million gallons (3.3 million barrels) of oil, caused relatively little damage because it happened in the open sea where currents and winds contained it until it disintegrated.
11
POPSAncient Climate Change May Portend Toasty Future With a continuation of current trends in the use of coal, oil, and gas, natural background atmospheric CO2 concentrations are expected to double around mid-century. The ancient emissions are comparable to the CO2 that can be expected from human activity over the coming few centuries. If human-induced carbon emissions continue unabated, there could be a similar shift in species evolution.
Most Pops
see Most Pops
4
Clips
Latest Pops
Latest Comments
Tags
Print
Save
Turn on live update