Satellites spy Antarctic 'upside-down ice canyon'

Satellites spy Antarctic 'upside-down ice canyon'

Image copyrightESA Image caption Graphic: Some fast-thinning glaciers drain into the Amundsen SeaScientists have identified a way in which the effects of Antarctic melting can be enhanced. Their new satellite observations of the Dotson Ice Shelf show its losses, far from being even, are actually focused on a long, narrow sector. In places, this has cut an inverted canyon through more than half the thickness of the shelf structure. If the melting continued unabated, it would break Dotson in 40-50 years, not the 200 years currently projected. “That is unlikely…

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'Sooty birds' reveal hidden US air pollution

'Sooty birds' reveal hidden US air pollution

Image copyrightCarl Fuldner and Shane DuBay Image caption Red-headed Woodpeckers from 1901 (top) and 1982 (bottom)Soot trapped in the feathers of songbirds over the past 100 years is causing scientists to revise their records of air pollution. US researchers measured the black carbon found on 1,300 larks, woodpeckers and sparrows over the past century. They’ve produced the most complete picture to date of historic air quality over industrial parts of the US. The study also boosts our understanding of historic climate change. Smokey cities Black carbon, a major component of…

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Swallowtail butterfly could benefit from Papua New Guinea project

Swallowtail butterfly could benefit from Papua New Guinea project

Swallowtail butterfly could benefit from Papua New Guinea project – BBC News “)}elsej.write(‘”)},confirm:function(a)return true,setFig:function(a,b)(function())(),deserialise:function(b)var a=;b.replace(/([a-z]2):([0-9]+)/g,function()a[RegExp.$1]=+RegExp.$2);return a}})();fig.manager.include();/*]]>*/ ‘); } } oqsSurveyManager(window, ‘ON’); /*]]>*/ ‘); } })(); /*]]>*/ ‘); } })(); /*]]>*/ ‘); } else document.write(”); } })(); /*]]>*/ ‘); document.write(‘‘); document.write(‘‘); if (/[?|&]ex-dp/.test(window.location.href) || document.cookie.indexOf(‘ex-dp=’) !== -1) bbcdotcom.utils.addHtmlTagClass(‘bbcdotcom-ex-dp’); } })(); /*]]>*/ ‘); if(document.location.protocol === “http:”) document.write(”); else document.write(”); } } } /*]]>*/ Source link

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Toronto Zoo's tumbling panda cubs

Toronto Zoo's tumbling panda cubs

Toronto Zoo’s tumbling panda cubs – BBC News “)}elsej.write(‘”)},confirm:function(a)return true,setFig:function(a,b)(function()a.orb=a.orb)(),deserialise:function(b)var a=;b.replace(/([a-z]2):([0-9]+)/g,function()a[RegExp.$1]=+RegExp.$2);return a}})();fig.manager.include();/*]]>*/ ‘); } } oqsSurveyManager(window, ‘ON’); /*]]>*/ ‘); } })(); /*]]>*/ ‘); } })(); /*]]>*/ ‘); } else document.write(”); } })(); /*]]>*/ ‘); document.write(‘‘); document.write(‘‘); if (/[?|&]ex-dp/.test(window.location.href) || document.cookie.indexOf(‘ex-dp=’) !== -1) bbcdotcom.utils.addHtmlTagClass(‘bbcdotcom-ex-dp’); } })(); /*]]>*/ Source link

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