http://www.physorg.com/ en-us Physorg.com internet news portal provides the latest news on science including: Physics, Nanotechnology, Life Sciences, Space Science, Earth Science, Environment, Health and Medicine. The mysterious Monarch butterfly, which migrates en masse annually between Canada and Mexico, is now facing a new peril: another insect thriving in Western Mexican forests. http://www.physorg.com/news178046357.html Biology Sat, 21 Nov 2009 17:19:43 EST news178046357 (PhysOrg.com) -- Female monarch butterflies in eastern North America have significantly declined over the past 30 years, a new study by a University of Georgia researcher reveals. http://www.physorg.com/news172944025.html Biology Wed, 23 Sep 2009 17:00:53 EST news172944025 (PhysOrg.com) -- Scientists have succeeded for the first time in fitting monarch butterflies with a radio transmitter and in tracking them from an aircraft over a long distance on their flight northwards during the butterflies` annual migration from their winter residence in Mexico. http://www.physorg.com/news167656930.html Biology Fri, 24 Jul 2009 12:22:38 EST news167656930 Scientists studying Eastern North American monarch butterflies (Danaus plexippus) have uncovered a suite of genes that may be involved in driving the butterflies to migrate towards Mexico for the winter. Their research, published in the open access journal BMC Biology, describes 40 genes that are linked to the butterflies' compulsion to orientate themselves by an internal 'sun compass' and begin the 4000km journey southwards. http://www.physorg.com/news157733654.html Biology Tue, 31 Mar 2009 15:54:45 EST news157733654 Canada, Mexico and the United States are joining forces to protect and conserve the Monarch butterfly, which has become a symbol of North America's shared environment. http://www.physorg.com/news133845612.html Space & Earth Sat, 28 Jun 2008 04:20:12 EST news133845612