http://hosted.ap.org/ AP Top Science News At 2:15 p.m. EST &copy; 2009 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Learn more about our <a href="http://apdigitalnews.com/privacy.html">Privacy Policy</a>. http://hosted.ap.org/dynamic/stories/U/US_GRAND_CANYON_PERMITS?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT FLAGSTAFF, Ariz. (AP) -- Getting one of the roughly 11,500 permits granted each year to backpack overnight in the Grand Canyon has become so competitive and "unfair" that managers at the national park have decided to change the system.... http://hosted.ap.org/dynamic/stories/E/EU_SCI_BIG_BANG_MACHINE?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT GENEVA (AP) -- The world's largest atom smasher made another leap forward Monday by circulating beams of protons in opposite directions at the same time in the $10 billion machine after more than a year of repairs, organizers said.... http://hosted.ap.org/dynamic/stories/U/US_SPACE_SHUTTLE?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT CAPE CANAVERAL, Fla. (AP) -- A pair of astronauts stepped out on the third and final spacewalk of their shuttle mission Monday, helping to install an enormous oxygen tank at the International Space Station.... http://hosted.ap.org/dynamic/stories/S/SCI_CLIMATE_09_POST_KYOTO?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT WASHINGTON (AP) -- Since the 1997 international accord to fight global warming, climate change has worsened and accelerated - beyond some of the grimmest of warnings made back then.... http://hosted.ap.org/dynamic/stories/C/CLIMATE?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT COPENHAGEN (AP) -- Sixty-five world leaders have said they will attend the Copenhagen climate summit in December, and several more have responded positively to invitations, Danish officials said Sunday.... http://hosted.ap.org/dynamic/stories/E/EU_BRITAIN_DARWIN?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT LONDON (AP) -- An auction house says it is selling a rare first edition of Charles Darwin's "On the Origin of Species" found in a family's guest lavatory in southern England.... http://hosted.ap.org/dynamic/stories/C/CLIMATE_09_HOT_AIR?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT KONSTANTINOVKA, Ukraine (AP) -- Vladimir Gapor is a plumber by trade, but now he's a scavenger, prying bits of scrap steel from the ruins of his old factory and selling them for a pittance.... http://hosted.ap.org/dynamic/stories/E/EU_ITALY_SHROUD_OF_TURIN?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT ROME (AP) -- A Vatican researcher has rekindled the age-old debate over the Shroud of Turin, saying that faint writing on the linen proves it was the burial cloth of Jesus. Experts say the historian may be reading too much into the markings, and they stand by carbon-dating that points to the shroud being a medieval forgery.... http://hosted.ap.org/dynamic/stories/U/US_MARINE_CENSUS?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT NEW ORLEANS (AP) -- The creatures living in the depths of the ocean are as weird and outlandish as the creations in a Dr. Seuss book: tentacled transparent sea cucumbers, primitive "dumbos" that flap ear-like fins, and tubeworms that feed on oil deposits.... http://hosted.ap.org/dynamic/stories/E/EU_CLIMATE_HACKED_E_MAILS?SITE=FLPET&SECTION=HOME&TEMPLATE=DEFAULT LONDON (AP) -- Computer hackers have broken into a server at a well-respected climate change research center in Britain and posted hundreds of private e-mails and documents online - stoking debate over whether some scientists have overstated the case for man-made climate change....