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Science Says: Whale of a mystery solved? How they got so big
WASHINGTON (AP) -- Scientists think they have answered a whale of a mystery: How the ocean creatures got so huge so quickly....



China urges balance on environment, economy in Antarctica
BEIJING (AP) -- A Chinese leader on Tuesday urged international representatives to strike a "proper balance" between environmental and economic interests in Antarctica, as the frozen continent's vulnerability to climate change raises worries that some nations could seek to exploit its natural resources....



Spacewalking astronauts pull off urgent station repairs
CAPE CANAVERAL, Fla. (AP) -- Spacewalking astronauts completed urgent repairs at the International Space Station on Tuesday, replacing equipment that failed three days earlier and restoring a backup for a vital data-relay system....



Science Says: Medications prevent opioid addiction relapse
CHICAGO (AP) -- Remarks by a top U.S. health official have reignited a quarrel in the world of addiction and recovery: Does treating opioid addiction with medication save lives? Or does it trade one addiction for another?...



After 9 months in space, mouse sperm yield healthy mice
CAPE CANAVERAL, Fla. (AP) -- After nine months in space, mouse sperm has yielded healthy mice, Japanese scientists reported Monday....



Bevy of bobcats: Thriving animals poised as next urban pest
CONCORD, N.H. (AP) -- As someone who has studied bobcats for almost four decades, wildlife ecologist John Litvaitis remembers many times returning from the field without spotting a single one of these solitary and shy creatures that often hunt at dusk....



PBS airing live nature special from Alaska this summer
NEW YORK (AP) -- PBS is collaborating with the BBC on a special live event this summer where cameras will try to catch bears, wolves, eagles and other wildlife in their natural habitat in Alaska....



'Winged' snake species from 5 million years ago discovered
GRAY, Tenn. (AP) -- A new species of snake that lived roughly 5 million years ago has been discovered at a fossil site in Tennessee....



Land around powerlines could be boon to birds
CONCORD, N.H. (AP) -- Transmission lines may be eyesores for most people but for songbirds, the forest around them might just be critical habitat....



Climate change taking toll on clarity of Lake Tahoe water
CRYSTAL BAY, Nev. (AP) -- Climate change is causing Lake Tahoe to warm sooner in the spring than it has historically, disrupting the normal mixing of shallow and deep water and undercutting gains made in reversing the loss of clarity of the cobalt mountain lake, scientists say....