All today's stories on NewScientist.com including: caterpillars that call their nemesis, Stonehenge's secret sounds, day-squeezing sunspots and moreimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2e722b/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Today+on+New+Scientist%3A+27+August+2010link=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fshortsharpscience%2F2010%2F08%2Ftoday-on-new-scientist-27-augu.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Today+on+New+Scientist%3A+27+August+2010link=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fshortsharpscience%2F2010%2F08%2Ftoday-on-new-scientist-27-augu.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868934877/u/60/f/10897/c/749/s/221147691/a2.htm"img src="http://da.feedsportal.com/r/78868934877/u/60/f/10897/c/749/s/221147691/a2.img" border="0"//a

The dinosaurs were wiped out by at least two space impacts rather than a single strike, say scientists.

Two of the darkest things in the universe may together be making light ndash; or at least, gamma rays ndash; detectable from Earthimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2db5f9/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Black+holes+%2B+dark+matter+%3D+lightlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20727753.800-black-holes--dark-matter--light.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Black+holes+%2B+dark+matter+%3D+lightlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20727753.800-black-holes--dark-matter--light.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868867848/u/60/f/10897/c/749/s/221099513/a2.htm"img src="http://da.feedsportal.com/r/78868867848/u/60/f/10897/c/749/s/221099513/a2.img" border="0"//a

DNA study of the Indonesian mimic octopus reveals how its ability to impersonate other sea life evolved.

An exhibition of photographs of the sustainable energy industry includes this shot of a huge hydroelectric turbine shaftimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2dadf8/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Renewable+power+on+a+grand+scalelink=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fshortsharpscience%2F2010%2F08%2Fbig-green-power-tech.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Renewable+power+on+a+grand+scalelink=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fshortsharpscience%2F2010%2F08%2Fbig-green-power-tech.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868866173/u/60/f/10897/c/749/s/221097464/kg/20/a2.htm"img src="http://da.feedsportal.com/r/78868866173/u/60/f/10897/c/749/s/221097464/kg/20/a2.img" border="0"//a

Experience from space missions shows the trapped miners in Chile may face their most severe psychological challenges in a couple of months' timeimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2d7173/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=How+astronauts%27+experience+could+help+trapped+minerslink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19375-how-astronauts-experience-could-help-trapped-miners.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=How+astronauts%27+experience+could+help+trapped+minerslink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19375-how-astronauts-experience-could-help-trapped-miners.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868922663/u/60/f/10897/c/749/s/221081971/kg/45/a2.htm"img src="http://da.feedsportal.com/r/78868922663/u/60/f/10897/c/749/s/221081971/kg/45/a2.img" border="0"//a

These dark regions may somehow alter the rate of Earth's spin ndash; an insight that could help steer spacecraft more accuratelyimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2cdde1/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Sunspots+squeeze+and+stretch+the+daylink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20727754.000-sunspots-squeeze-and-stretch-the-day.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Sunspots+squeeze+and+stretch+the+daylink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20727754.000-sunspots-squeeze-and-stretch-the-day.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868856068/u/60/f/10897/c/749/s/221044193/kg/45/a2.htm"img src="http://da.feedsportal.com/r/78868856068/u/60/f/10897/c/749/s/221044193/kg/45/a2.img" border="0"//a

Could roads surfaced with solar panels bring renewable energy to our doors?img width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2cdde2/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Innovation%3A+Sunrise+boulevards+could+bring+clean+powerlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19374-innovation-sunrise-boulevards-could-bring-clean-power.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Innovation%3A+Sunrise+boulevards+could+bring+clean+powerlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19374-innovation-sunrise-boulevards-could-bring-clean-power.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868856067/u/60/f/10897/c/749/s/221044194/kg/20/a2.htm"img src="http://da.feedsportal.com/r/78868856067/u/60/f/10897/c/749/s/221044194/kg/20/a2.img" border="0"//a

pOur top articles ranked by reader popularity./pullia href='http://feeds.newscientist.com/c/749/f/10897/s/cfa475a/l/0L0Snewscientist0N0Carticle0Cdn193460Eharvard0Econfirms0Emisconduct0Eby0Emorality0Eresearcher0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Harvard confirms misconduct by morality researcher/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf79ba7/l/0L0Snewscientist0N0Carticle0Cmg20A7277420B80A0A0Eflawed0Eproof0Eushers0Ein0Eera0Eof0Ewikimath0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Flawed proof ushers in era of wikimath/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf89814/l/0L0Snewscientist0N0Carticle0Cmg20A7277450B30A0A0Ehow0Ecollapsing0Ebubbles0Ecould0Eshoot0Ecancer0Ecells0Edead0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'How collapsing bubbles could shoot cancer cells dead/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf72790/l/0L0Snewscientist0N0Carticle0Cmg20A7277440B70A0A0Eyou0Edont0Eneed0Ebrothers0Eor0Esisters0Eto0Ebe0Esociable0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'You don't need brothers or sisters to be sociable/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf4fbab/l/0L0Snewscientist0N0Carticle0Cdn193390Ehydrogen0Ebonds0Eare0Ecaught0Eon0Ecamera0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Hydrogen bonds are caught on camera/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf68298/l/0L0Snewscientist0N0Carticle0Cdn193430Emaking0Elight0Ework0Eof0Eled0Edroop0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Making light work of LED droop/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf95f20/l/0L0Snewscientist0N0Carticle0Cdn193450Egulf0Espill0Eis0Ethe0Eoil0Elurking0Eunderwater0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Gulf spill: Is the oil lurking underwater?/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/bbec660/l/0L0Snewscientist0N0Carticle0Cdn1930A30Eemc20Enot0Eon0Econservapedia0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'This week's top stories [20 August 2010]/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cf5bdf9/l/0L0Snewscientist0N0Cblogs0Cshortsharpscience0C20A10A0C0A80Cancient0Echinese0Emedicine0Ecould0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Ancient Chinese medicine could boost cancer therapy/a/lilia href='http://feeds.newscientist.com/c/749/f/10897/s/cfc90fd/l/0L0Snewscientist0N0Carticle0Cmg20A7277440B10A0A0Ekiller0Etcells0Ethe0Efix0Efor0Eorgan0Erejection0Bhtml0DDCMP0FOTC0Erss0Gnsref0Fonline0Enews/story02.htm'Killer T-cells, the fix for organ rejection?/a/li/ulimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/bbec67c/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=This+week%27s+top+stories+%5B27+August+2010%5Dlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19346-harvard-confirms-misconduct-by-morality-researcher.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=This+week%27s+top+stories+%5B27+August+2010%5Dlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19346-harvard-confirms-misconduct-by-morality-researcher.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868856066/u/60/f/10897/c/749/s/197052028/kg/43/a2.htm"img src="http://da.feedsportal.com/r/78868856066/u/60/f/10897/c/749/s/197052028/kg/43/a2.img" border="0"//a

The hormone does make people more trusting, but not gullible, as many internet vendors would have us believeimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2c35ff/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Oxytocin+fails+%27trust+elixir%27+testlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19373-oxytocin-fails-trust-elixir-test.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Oxytocin+fails+%27trust+elixir%27+testlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19373-oxytocin-fails-trust-elixir-test.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868848028/u/60/f/10897/c/749/s/221001215/a2.htm"img src="http://da.feedsportal.com/r/78868848028/u/60/f/10897/c/749/s/221001215/a2.img" border="0"//a

Rainforests give more to ears than to eyes - has a sound installation in a huge London greenhouse managed to recreate them, asks Catherine de Langeimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2bd774/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Sounds+of+the+rainforest+versus+sounds+of+the+citylink=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fculturelab%2F2010%2F08%2Fsounds-of-the-rainforest-versus-sounds-of-the-city.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Sounds+of+the+rainforest+versus+sounds+of+the+citylink=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fculturelab%2F2010%2F08%2Fsounds-of-the-rainforest-versus-sounds-of-the-city.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868901931/u/60/f/10897/c/749/s/220977012/kg/42/a2.htm"img src="http://da.feedsportal.com/r/78868901931/u/60/f/10897/c/749/s/220977012/kg/42/a2.img" border="0"//a

The results of this grisly research could be significant in court cases where prison officers are accused of negligence or foul playimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2b9f52/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Macabre+details+of+suicide+hangings+revealedlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20727754.300-macabre-details-of-suicide-hangings-revealed.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Macabre+details+of+suicide+hangings+revealedlink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fmg20727754.300-macabre-details-of-suicide-hangings-revealed.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868899621/u/60/f/10897/c/749/s/220962642/kg/38-67/a2.htm"img src="http://da.feedsportal.com/r/78868899621/u/60/f/10897/c/749/s/220962642/kg/38-67/a2.img" border="0"//a

Apple thinks that the humble jack socket needs a redesign. A microphone buried beneath it could stop dust entering iPhones and iPods, says Paul Marksimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2b1a81/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Socket+and+see%3A+Apple+reinvents+the+audio+jacklink=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fshortsharpscience%2F2010%2F08%2Fsocket-and-see-apple-reinvents.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Socket+and+see%3A+Apple+reinvents+the+audio+jacklink=http%3A%2F%2Fwww.newscientist.com%2Fblogs%2Fshortsharpscience%2F2010%2F08%2Fsocket-and-see-apple-reinvents.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868103419/u/60/f/10897/c/749/s/220928641/kg/63-68/a2.htm"img src="http://da.feedsportal.com/r/78868103419/u/60/f/10897/c/749/s/220928641/kg/63-68/a2.img" border="0"//a

Early humans drove Ice Age bears to extinction by occupying their caves, scientists claim

Space station could be used to grow a new kind of crystal

Plants are able to summon insects to their aid to avoid being eaten by caterpillars, scientists discover.

bTrevor Cox/b reveals how the acoustic footprint of the world's most famous prehistoric monument was measuredimg width='1' height='1' src='http://feeds.newscientist.com/c/749/f/10897/s/d2aa8c3/mf.gif' border='0'/div class='mf-viral'table border='0'trtd valign='middle'a href="http://res.feedsportal.com/viral/sendemail2.html?title=Acoustic+archaeology%3A+The+secret+sounds+of+Stonehengelink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19276-acoustic-archaeology-the-secret-sounds-of-stonehenge.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/emailthis2.gif" border="0" //a/tdtd valign='middle'a href="http://res.feedsportal.com/viral/bookmark.cfm?title=Acoustic+archaeology%3A+The+secret+sounds+of+Stonehengelink=http%3A%2F%2Fwww.newscientist.com%2Farticle%2Fdn19276-acoustic-archaeology-the-secret-sounds-of-stonehenge.html%3FDCMP%3DOTC-rss%26nsref%3Donline-news" target="_blank"img src="http://res3.feedsportal.com/images/bookmark.gif" border="0" //a/td/tr/table/divbr/br/a href="http://da.feedsportal.com/r/78868886450/u/60/f/10897/c/749/s/220899523/a2.htm"img src="http://da.feedsportal.com/r/78868886450/u/60/f/10897/c/749/s/220899523/a2.img" border="0"//a

A scheme to generate renewable energy by simply pulling electric charge out of humid air sparks debate amongst scientists.

Professor Mike Bevan: "The genome sequence does provide a foundation for an increase in the amount of genetic engineering in wheat"

The Lower Ninth Ward of New Orleans was hit particularly hard during Hurricane Katrina. The BBC's Andy Gallacher met with some of those still struggling to recover their community.