Copyright (c) 2012 Yahoo! Inc. All rights reserved. http://news.yahoo.com/science science Science News en-us Tue, 14 Feb 2012 14:30:03 GMT 5 142 18 http://news.yahoo.com/science http://l.yimg.com/a/i/us/nws/th/main_142c.gif http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120210/ap_on_sc/us_med_artificial_knees ap/20120210/us_med_artificial_knees AP science Fri, 10 Feb 2012 13:44:09 GMT <p><a href="http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120210/ap_on_sc/us_med_artificial_knees"><img src="http://d.yimg.com/a/p/ap/20120210/capt.e394faffca034494b4e1a11277fa07b6-e394faffca034494b4e1a11277fa07b6-0.jpg?x=97&y=130&q=85&sig=iHLcFfuxewnnrZxMdOvcHA--" align="left" height="130" width="97" alt="In this Feb. 4, 2012 photo, Donna Brent, 63, works out her leg at her home in Deerfield, Ill. Brent says decades of racket ball, tennis, softball and other sports took a toll on her knees, but she got used to living with the pain, even when she became bowlegged and developed a limp. When pain started getting in the way of some of her sports, she gave in to her doctor's advice and had a knee replacement operation last June on her right knee. Nearly 1 in 20 Americans older than 50 have bionic knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population. (AP Photo/Nam Y. Huh)" border="0" /></a>AP - Nearly 1 in 20 Americans older than 50 have artificial knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population.</p><br clear="all"/> <p><a href="http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120210/ap_on_sc/us_med_artificial_knees"><img src="http://d.yimg.com/a/p/ap/20120210/capt.e394faffca034494b4e1a11277fa07b6-e394faffca034494b4e1a11277fa07b6-0.jpg?x=97&y=130&q=85&sig=iHLcFfuxewnnrZxMdOvcHA--" align="left" height="130" width="97" alt="photo" title="In this Feb. 4, 2012 photo, Donna Brent, 63, works out her leg at her home in Deerfield, Ill. Brent says decades of racket ball, tennis, softball and other sports took a toll on her knees, but she got used to living with the pain, even when she became bowlegged and developed a limp. When pain started getting in the way of some of her sports, she gave in to her doctor's advice and had a knee replacement operation last June on her right knee. Nearly 1 in 20 Americans older than 50 have bionic knees, or more than 4 million people, according to the first national estimate showing how common these replacement joints have become in an aging population. (AP Photo/Nam Y. Huh)" border="0"/></a></p><br clear="all"/> (AP) http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120210/ap_on_sc/us_sci_mars_budget ap/20120210/us_sci_mars_budget AP science Fri, 10 Feb 2012 00:06:17 GMT AP - Scientists say NASA is about to propose major cuts in its exploration of other planets, especially Mars. And NASA's former science chief is calling it irrational. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120209/ap_on_sc/us_sci_la_nina ap/20120209/us_sci_la_nina AP science Thu, 09 Feb 2012 21:07:46 GMT AP - Federal weather forecasters say the La Nina weather phenomenon that contributed to the southwestern U.S. drought is winding down. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120209/ap_on_sc/us_sci_antarctic_lake_life_elsewhere ap/20120209/us_sci_antarctic_lake_life_elsewhere AP science Thu, 09 Feb 2012 07:01:27 GMT AP - If scientists find microbes in a frigid lake two miles beneath the thick ice of Antarctica, it will illustrate once again that somehow life finds a way to survive in the strangest and harshest places. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/livescience/20120214/sc_livescience/cakeforbreakfaststudysaysgoforit livescience/20120214/cakeforbreakfaststudysaysgoforit LiveScience.com science Tue, 14 Feb 2012 14:30:03 GMT LiveScience.com - Good news for the kid in you: Not only can you eat cake for breakfast, doing so may actually help you keep weight off, a new study suggests. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/hsn/20120214/hl_hsn/smogmayharmwomensbrainsstudy hsn/20120214/smogmayharmwomensbrainsstudy HealthDay science Tue, 14 Feb 2012 04:47:00 GMT HealthDay - MONDAY, Feb. 13 (HealthDay News) -- A lifetime's exposure to air pollution may contribute to mental decline in older women, a new study says. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/nm/20120213/ts_nm/us_usa_budget_energy nm/20120213/us_usa_budget_energy Reuters science Mon, 13 Feb 2012 21:00:46 GMT Reuters - The White House proposed more funds for renewable energy and pipeline safety in the 2013 budget while renewing the call to end subsidies for the oil and gas sector. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/space/20120214/sc_space/antarcticaslakevostokistestcaseforexploringicyjupitermoon space/20120214/antarcticaslakevostokistestcaseforexploringicyjupitermoon SPACE.com science Tue, 14 Feb 2012 13:14:59 GMT SPACE.com - Russian scientists in Antarctica have reached a lake that's been buried in ice for more than 14 million years &mdash; a milestone that could provide hints of what to expect when the ocean under the icy crust of Jupiter's moon, Europa, is similarly explored. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/hsn/20120214/hl_hsn/stemcelltreatmentmightreverseheartattackdamage hsn/20120214/stemcelltreatmentmightreverseheartattackdamage HealthDay health Tue, 14 Feb 2012 14:01:47 GMT HealthDay - MONDAY, Feb. 13 (HealthDay News) -- Stem cell therapy's promise for healing damaged tissues may have gotten a bit closer to reality. In a small, early study, heart damage was reversed in heart-attack patients treated with their own cardiac stem cells, researchers report. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/nm/20120209/us_nm/us_usa_seaworld_lawsuit nm/20120209/us_usa_seaworld_lawsuit Reuters us Thu, 09 Feb 2012 03:44:11 GMT Reuters - A federal judge on Wednesday threw out an animal rights group's lawsuit accusing SeaWorld of enslaving captive killer whales, ruling that orcas had no standing to seek the same constitutional rights as people. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/csm/20120213/ts_csm/466462 csm/20120213/466462 The Christian Science Monitor science Tue, 14 Feb 2012 00:24:06 GMT The Christian Science Monitor - Fracking may lead to larger releases of methane into the air than previously estimated, according to a new study. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/us_weatherpage_weather ap/20120214/us_weatherpage_weather AP us Tue, 14 Feb 2012 09:51:52 GMT AP - Valentine's Day will be greeted by a storm that will begin the day in the Mississippi Valley before moving eastward into the eastern third of the country. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/space/20120213/sc_space/nasaspaceshuttlecarryingjumbojetretiresafteronelastflight space/20120213/nasaspaceshuttlecarryingjumbojetretiresafteronelastflight SPACE.com science Mon, 13 Feb 2012 23:30:00 GMT SPACE.com - One of only two planes ever to carry NASA's space shuttles on piggy-back rides across the country has taken its last flight after more than 20 years of service. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/livescience/20120210/sc_livescience/twogenesforsealinginmemoriesidentified livescience/20120210/twogenesforsealinginmemoriesidentified LiveScience.com science Fri, 10 Feb 2012 13:04:58 GMT LiveScience.com - Inside the teensy brains of fruit flies lies the blueprint for how memories form &mdash; information that likely carries over to our bulky noggins &mdash;&nbsp;and researchers have just identified two genes that are key to forming long-term memories. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/nm/20120213/wl_nm/us_venezuela_election_capriles nm/20120213/us_venezuela_election_capriles Reuters world Mon, 13 Feb 2012 20:47:44 GMT Reuters - Venezuela's opposition primary winner Henrique Capriles on Monday exuded confidence that he can unseat President Hugo Chavez and end 13 years of socialism that foes say has left the OPEC nation in crisis. http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120214/ap_on_re_us/us_joplin_tornado_public_service ap/20120214/us_joplin_tornado_public_service AP us Tue, 14 Feb 2012 05:52:14 GMT <p><a href="http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120214/ap_on_re_us/us_joplin_tornado_public_service"><img src="http://d.yimg.com/a/p/ap/20120213/capt.2098852293fd4272813421b562602180-2098852293fd4272813421b562602180-0.jpg?x=97&y=130&q=85&sig=8P_mdb6Xevz85C_yk1DMpw--" align="left" height="130" width="97" alt="FILE - In this Oct. 29, 2011, file photo, volunteer Lyn Kent, of Tulsa, Okla., holds a wall as new homes are raised in the Joplin, Mo. Since the May 22 tornado, thousands of volunteers have come to Joplin to help, including many Joplin natives that gave up careers elsewhere to come home to help with the town's long recovery. (AP Photo/The Joplin Globe, T. Rob Brown, File)" border="0" /></a>AP - One worked in financial services. Another was an insurance agent. A third had recently finished law school and embarked on a legal career.</p><br clear="all"/> <p><a href="http://us.rd.yahoo.com/dailynews/rss/science/*http://news.yahoo.com/s/ap/20120214/ap_on_re_us/us_joplin_tornado_public_service"><img src="http://d.yimg.com/a/p/ap/20120213/capt.2098852293fd4272813421b562602180-2098852293fd4272813421b562602180-0.jpg?x=97&y=130&q=85&sig=8P_mdb6Xevz85C_yk1DMpw--" align="left" height="130" width="97" alt="photo" title="FILE - In this Oct. 29, 2011, file photo, volunteer Lyn Kent, of Tulsa, Okla., holds a wall as new homes are raised in the Joplin, Mo. Since the May 22 tornado, thousands of volunteers have come to Joplin to help, including many Joplin natives that gave up careers elsewhere to come home to help with the town's long recovery. (AP Photo/The Joplin Globe, T. Rob Brown, File)" border="0"/></a></p><br clear="all"/> (AP)