One-Third of U.S. Honeybee Colonies Died Last Winter, Threatening Food Supply
“We’re getting closer and closer to the point where we don’t have enough bees in this country to meet pollination demands,” said entomologist Dennis vanEngelstorp of the University of Maryland, who led the survey documenting the declines. read more
What caused the interestingly intricate tails that Comet Lemmon displayed earlier this year? First of all, just about every comet that nears the Sun displays two tails: adust tailand anion tail.Comet Lemmon’s dust tail, visible above and around the comet nucleus in off-white, is produced by sun-light reflectingdustshed by thecomet’s heated nucleus. Flowing and more sculptured, however, isC/2012 F6 (Lemmon)’s blueiontail, created by thesolar windpushing ions expelled by the nucleus away from the Sun. Also of note is the coma seen surroundingComet Lemmon’s nucleus,tinted greenby atomic carbon gas fluorescing in sunlight. Theabove imagewas taken from the dark skies ofNamibiain mid-April. Comet Lemmon is fading as it nowheads backto the outer Solar System.
Also known as the Southern Visacacha, the mountain visacacha, while it may look like a rabbit is a species of rodent related to chinchillas. Mountain visacachas are found throughout the Andes mountains in South America. Viscachas are also diurnal and emerge from their cliffside dens to feed on vegetation and bask in the sun.