Bacteria can anticipate a future event and prepare for it, according to new research at the Weizmann Institute of Science. In a paper that appeared June 17 in Nature, Prof. Yitzhak Pilpel, doctoral student Amir Mitchell and research associate Dr. Orna Dahan of the Institute's Molecular Genetics Department, together with Prof. Martin Kupiec and Gal Romano of Tel Aviv University, examined microorganisms living in environments that change in predictable ways.
Saturday, June 20, 2009
Thursday, June 18, 2009
Mounting evidence shows native grasses could destroy explosives pollution
Monday, June 15, 2009
Sunday, June 14, 2009
Wednesday, June 10, 2009
Global Warming: Heat Could Kill Drought-stressed Trees Fast
Widespread die-off of piƱon pine across the southwestern United States during future droughts will occur at least five times faster if climate warms by 4 degrees Celsius, even if future droughts are no worse than droughts of the past century, scientists have discovered in experiments conducted at the University of Arizona's Biosphere 2.
Tuesday, June 9, 2009
Sunday, June 7, 2009
Saturday, June 6, 2009
Tuesday, June 2, 2009
Global Bird Species in Serious Decline
Researchers have known about the speckled brown Sidamo lark for only 40 years. Always a rare sight, the elusive bird may soon vanish from the prairie grasses of Ethiopia forever.
Its habitat already restricted to less than 100 square kilometers, the lark is rapidly losing territory as local residents, the Borana ethnic group, convert grassland into heavily grazed pasture. Unless the Borana are allowed to resume their nomadic ways, within the next few years the Sidamo lark will likely become the first known bird species to vanish from mainland Africa, researchers say.
Its habitat already restricted to less than 100 square kilometers, the lark is rapidly losing territory as local residents, the Borana ethnic group, convert grassland into heavily grazed pasture. Unless the Borana are allowed to resume their nomadic ways, within the next few years the Sidamo lark will likely become the first known bird species to vanish from mainland Africa, researchers say.