Posted: 6:21 PM Authorities are reporting progress on a wildfire threatening rural houses east of Roundup as fire crews dig in ahead of heat and wind that forecasters say could fan multiple blazes across the state.
Posted: 6:15 PM As it draws closer to the Gulf Coast, Isaac is bringing back memories of another devastating storm: Hurricane Katrina.
Posted: 6:12 PM President Barack Obama has declared a state of emergency in Louisiana as that state prepares for Tropical Storm Isaac.
Updated: 6:09 PM Scientists have found a few ancient insects frozen in what is Earth's oldest bug trap.
Posted: 7:36 AM Forecasters are now predicting that Isaac will become a Category 1 hurricane as it crosses the Gulf of Mexico instead of a Category 2.
Posted: 9:32 PM Tropical storm watches are up already for both the west and east coasts of Florida, as Tropical Storm Isaac bears in on Haiti.
Posted: 9:26 PM Tropical Storm Isaac is expected to dump up to 12 inches of rain on Hispaniola, the island shared by Haiti and the Dominican Republic.
Posted: 9:22 PM Crews in air tankers and helicopters have stopped the run of a massive wildfire in Northern California just miles from the tiny mountain town of Mineral.
Posted: 9:01 PM Gov. Sam Brownback has revised an executive order making it easier for drought-stricken livestock producers to get hay to their animals.
Posted: 9:24 PM Hurricane Irene didn't prove to be the New York City flooding nightmare forecasters had feared.
Posted: 9:20 PM A massive wildfire in Northern California has destroyed more than 80 homes and other buildings and is threatening 900 more.
Posted: 9:17 PM Viewers can now relive the drama of the Curiosity rover's landing on Mars with a new NASA video detailing the final moments of touchdown.
Posted: 8:47 PM Tropical Storm Isaac churned toward the Dominican Republic and Haiti on Thursday, threatening to strengthen into a hurricane that could take a shot at Florida just as the Republicans gather for their national convention.
Posted: 10:04 AM The latest update on the nation's drought shows that the parched conditions continue worsening in key farm states even as the situation across all of the continental U.S. leveled off.
Posted: 6:11 PM Leaders across much of the Caribbean are closing schools and government offices and urging people to stay home as Tropical Storm Isaac takes aim at the region.
Posted: 6:06 PM Tropical Storm Isaac is getting better organized as it approaches the Carribbean.
Posted: 6:04 PM The NASA rover Curiosity has taken its first test drive on Mars.
Posted: 7:19 PM Forecasters say Tropical Storm Isaac has formed in the Atlantic with a track that could possibly take it toward Florida where the Republican National Convention will be held next week.
Posted: 7:15 PM Forecasters are keeping a wary eye on a tropical depression in the Atlantic Ocean that poses a potential threat to Florida during next week's Republican National Convention in Tampa.
Posted: 7:12 PM Scientists are preparing to send the NASA rover Curiosity on its first test drive on Mars and they say a broken wind sensor won't jeopardize its mission.
Posted: 7:09 PM A fire that threatens thousands of homes in Northern California is just 35 percent contained. With more firefighters arriving on the scene, officials say fire crews have been able to improve their fire lines.
Posted: 8:48 PM Hurricane Gordon sped across the Atlantic early Sunday toward the eastern Azores islands, where a hurricane warning is in effect, U.S. forecasters in Miami said.
Posted: 8:45 PM Minnesota authorities say a lightning strike on a Lake Superior beach injured eight people, including a 9-year-old Wisconsin boy who later died.
Posted: 8:39 PM Thousands of people are being told to leave their homes because of a wildfire burning in thick forest near some rural communities in far northern California.
Posted: 8:35 PM NASA's Curiosity rover has zapped its first Martian rock, aiming its laser for the sake of science.
