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noaa: state of the ozone layer 2011 1080p
Bookmarked 745 weeks ago much of life on earth requires oxygen - not only for metabolism but also for protection oxygen in its many forms occurs throughout the atmosphere at 21 molecular oxygen o2 is the second most common gas in our atmosphere at 00001 ozone o3 is hardly common but its impact is enormous near the ground in the stratosphere ozone acts as a pollutant in the upper atmosphere troposphere it acts as a shield blocking harmful ultraviolet energy from the sun much attention has been made to the human-caused deterioration of the ozone layer and the infamous quotholesquot that form over the antarctic each year the term quotholequot is a bit of a misnomer as an actual hole does not form the ozone layer just becomes much thinnernoaa is one of the global leaders in monitoring and analyzing the ozone layer and has co-authored the most recent analysis describing the state of the ozone layer the scientific assessment panel of the un montreal protocol on substances that deplete the ozone layer has found that the montreal protocol enacted in 1987 has been effective in reducing mankind039s impact on the ozone layer but climate change may also begin to show signs of impacting the ozone layer especially in the arctic where climate-induced circulation patterns may become more severethis animation uses data from noaa039s satellites to show the annual changes in the size of the antarctic ozone hole along with daily fluctuations in global ozone concentration as pointed out in the report the size of the antarctic ozone hole appears to have reached a turnaround point whereby the hole is not getting worse each year but at the same time it is not decreasing it is expected that a return to quotnormalquot pre-1980 levels of ozone will occur later in this century -- that is if the ban on ozone-destroying chemicals stays in placeyou can monitor daily troposphere ozone concentration here on noaa039s website: http:wwwnnvlnoaagovdailyimagephpproduct=ozone_daily_mappedpngozoneconcentrationcredit: noaasource: http:wwwnnvlnoaagovmediadetailphpmediaid=658ampampmediatypeid=2 |
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author jonah keri on getting the extra 2 in baseball interview 1 of 3
Bookmarked 748 weeks ago i was a little nervous about the publication of jonah keri039s new book the extra 2: how wall street strategies took a major league baseball team from worst to firstwhy because up until today the book most often associated with the former tampa bay devil rays was my own first book stadium for rent: tampa bay039s quest for major league baseball it was published in 1993click here to listen to the entire jonah keri interview: http:wwwmrmediacom201103sportswriter-jonah-keri-squeezes-extrahtml what is mr media interviews the calm of charlie rose the curiosity of terry gross and the unpredictability of howard stern exclusive hollywood celebrity pop culture podcast interviews by mr media aka bob andelman with newsmakers in tv radio movies music magazines newspapers books websites social media politics sports graphic novels and comics now in its 5th year subscribe free on itunes or mobile devices via the stitcher app and never miss a show watch or listen to more interviews like this one at http:wwwmrmediacom twitter: http:wwwtwittercomandelman facebook: http:wwwfacebookcommrmediaradio download the free mr media app for android phones: http:wwwnoticeorangecomrmrmediainterviews or listen on stitcher via your iphone blackberry or palm pre: http:wwwstitchercommrmedia |
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plasma cloud to collide with galactic center in 2013 - will the core explode
Bookmarked 749 weeks ago countdown to a black hole show-researchers are watching the first scenes of a cosmic show that039s expected to heat up over the next year as a giant gas cloud approaches the supermassive black hole at the center of our galaxythe impending collision was the subject of a research paper published in nature last december and now the european research media center is providing an update: by mid-2013 the cloud is expected to pass in the vicinity of the black hole known as sagittarius a at a distance of 36 light-hours or less than 25 billion miles 40 billion kilometersblack holes are gravitational singularities so dense that nothing not even light can escape their grip they can only be detected by their gravitational influence on their surroundings or by the blazing swirl of material being sucked down into their mawsome black holes are thought to be created when massive stars collapse others like sagittarius a are thought to be crushed into existence as part of the galaxy formation process sagittarius a is 43 million times as massive as our sun and is located 27000 light-years from our solar system there039s no danger that this black hole will gobble up the galaxy in fact it039s unusually well-behaved which is one reason why humanity has been able to hang around long enough to detect itstefan gillessen an astrophysicist at germany039s max planck institute for extraterrestrial physics has been observing sagittarius a for the past 20 years he says next year039s encounter could provide an unprecedented view of our supermassive black hole at its best or at its worsta computer simulation shows the elongation and breakup of a cloud of gas as it encounters the supermassive black hole at the center of our galaxy click on the image for an update and video on the encounter which is expected to begin in 2013quotso far there were only two stars that came that close to sagittarius aquot the media center quotes him as saying quotthey passed unharmed but this time will be different: the gas cloud will be completely ripped apart by the tidal forces of the black holequotastronomers at the european southern observatory say the speed of the cloud039s progress has nearly doubled over the past seven years to more than 5 million mph 8 million kilometers per hour they report that the cloud039s edges are already beginning to shred during the months to come it should break up into elongated filaments quotit will look like spaghettiquot gillessen saidfollow cosmiclogthe cloud is also expected to get much hotter and will probably start emitting x-raysreinhard genzel who heads the eso039s team of astronomers said the show won039t end with next year039s expected encounterquotthe next few years will be really fantastic and exciting because we039re probing the territoryquot he said in the media center039s video report quothere this cloud comes in gets disrupted but now it will begin to interact with the hot gas right around the black hole we have never seen this beforequot http:cosmiclogmsnbcmsncom_news2012062612423938-countdown-to-a-black-hole-showlitea giant gas cloud is on a collision course with our galaxy039s supermassive black hole this will give scientists the ability to watch the spaghetti-fying destruction of the cloud in real time credit: youriscom eso nasa published on jun 27 2012 by videofromspace |
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billions of habitable planets in our galaxy
Bookmarked 762 weeks ago scientists estimate 40 of the 160 billion red dwarf stars in our galaxy are orbited by a planet that could contain life read the full story:http:wwwmsnbcmsncomid46880631nstechnology_and_science-spacet3ne5exwobjadd tdc to your circles on googlehttps:plusgooglecom100134925804523235350postsjoin the conversation on facebookhttp:wwwfacebookcomthedailyconversationfollow the daily conversation on twitterhttp:wwwtwittercomthedailyconvo |
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