Make us your home page

Soot plays major role in global warming, study says



Internet users in China in 2012, an increase of 10 percent from the year before

Study says soot is big in warming

The tiny black particles released into the atmosphere by burning fuels are far more powerful agents of global warming than had been estimated, atmospheric scientists reported in a study issued Tuesday. These particles, which are known as black carbon and are the major component of soot, are the second most important contributor to global warming, behind carbon dioxide, wrote the 31 authors of the study, published online by the Journal of Geophysical Research-Atmospheres. The new calculation adds urgency to efforts to curb the production of black carbon, which is released primarily by diesel engines in the industrialized world and by primitive cookstoves and kerosene lamps in poorer nations. Natural phenomena like forest fires also produce it. The analysis has pushed methane to third place as a human contributor to global warming.

GPS devices for fake pill bottles

New York City police plan to combat the theft of painkillers and other highly addictive prescription medicines by asking pharmacies to hide fake pill bottles fitted with GPS devices amid the legitimate supplies on their shelves. While pharmacies elsewhere have experimented with so-called bait bottles, New York would take a more comprehensive approach by encouraging thousands of pharmacies to stock the bottles.

Ireland's burgers are not all beef

The Irish government said Tuesday that it had discovered traces of horse and pig DNA in burger products sold by some of the country's biggest supermarkets. The Food Safety Authority said the burgers aren't a threat to anyone's health but does "raise some concerns."

Times wires

Soot plays major role in global warming, study says 01/15/13 [Last modified: Tuesday, January 15, 2013 10:43pm]
Photo reprints | Article reprints

Copyright: For copyright information, please check with the distributor of this item, Associated Press.

Join the discussion: Click to view comments, add yours