Posted: 6:10 PM A weekly update on U.S. drought conditions shows the nation's worst drought in decades slightly worsened in the lower 48 states with the Midwest corn harvest in full swing.

Posted: 6:04 PM Seismologists are reporting two aftershocks of a strong earthquake that rattled Alaska's sparsely populated western Aleutian Islands.

Posted: 6:01 PM Scientists say NASA's newest Mars rover has found signs that a stream once flowed across the surface near the site where it landed.

Posted: 6:19 PM The International Space Station may have to move to avoid some space junk.

Posted: 6:06 PM NASA's future plans to explore Mars may end up using astronauts as space messengers.

Posted: 7:14 AM Washington state has its first "zombie bees."

Posted: 11:33 PM The U.S. weather satellite that tracks the East Coast and Atlantic hurricanes is broken.

Posted: 12:18 PM U.S. forecasters say Miriam has strengthened into a Category 3 hurricane well off Mexico's Baja California peninsula.

Posted: 7:35 AM Firefighters are trying to gain control of a pair of wildfires in Southern California that sent residents fleeing and destroyed at least four homes.

Posted: 7:23 AM Fire officials say two mountain cabins run by the U.S. Forest Service have been destroyed by wildfires burning in Washington state.

Posted: 8:56 AM Floodwaters are receding from much of the Alaska tourist town of Talkeetna, giving residents a chance to begin cleaning the muddy mess left behind. But officials are warning the danger hasn't passed and are advising people to boil their water.

Posted: 6:07 PM The residents of the quirky Alaska tourist town of Talkeetna are being asked to evacuate because the nearby river continues to rise after heavy rains.

Posted: 6:04 PM Space shuttle Endeavour has landed safely at the Los Angeles International Airport after a whirlwind aerial tour around California landmarks.

Posted: 6:01 PM A fleet of picture-snapping NASA satellites that for 40 years has documented forest fires, tsunamis and everyday changes in the Earth's geography is soon getting a new member.

Posted: 6:20 PM A weekly tracker of the nation's worst drought in decades says parched conditions continue easing in key Midwest states as farmers step up their corn harvests.

Posted: 6:15 PM Space shuttle Endeavour returned to its California roots Thursday after a wistful cross-country journey that paid homage to NASA workers and former Arizona Rep. Gabrielle Giffords and her astronaut husband.

Posted: 6:36 PM NASA's Mars Curiosity rover took hundreds of photos of what on Earth is a rare event: a partial eclipse of the sun.

Posted: 6:33 PM Scientists say the amount of ice in the Arctic Ocean shrank to an all-time low this year, smashing old records for the critical climate indicator.

Posted: 6:51 AM Space shuttle Endeavour has lifted off on its final journey.

Posted: 12:06 PM Space shuttle Endeavour apparently doesn't want to leave home.

Posted: 7:18 AM Tropical Storm Nadine is just below hurricane strength as it swirls in the Atlantic far from land.

Posted: 7:00 AM The NASA rover Curiosity is preparing to hit the Martian open road again after it wraps up its health checkups this week.

Updated: 4:45 AM High winds and tree branches falling on power lines left more than 840 people in the dark Wednesday evening.

Updated: 7:45 AM National Weather Service in Omaha/Valley is having a blood drive.

Posted: 10:16 PM Most people wouldn't say New York and tornado in the same breath. But two twisters that touched down in the nation's biggest city on Saturday are only the latest of about 60 small tornadoes that have hit the area in a half century.