AP - More ominous signs Wednesday have scientists saying that a global warming "tipping point" in the Arctic seems to be happening before their eyes: Sea ice in the Arctic Ocean is at its second lowest level in about 30 years.

AP - Purdue University on Wednesday reprimanded a scientist who has been accused of falsifying claims he produced nuclear fusion in tabletop experiments.

AP - Tropical Storm Fay brought some good news to the state's parched Everglades and its liquid heart, Lake Okeechobee — lots and lots of water.

AP - Talk about an extreme makeover: Scientists have transformed one type of cell into another in living mice, a big step toward the goal of growing replacement tissues to treat a variety of diseases.

LiveScience.com - A turtle that toddled alongside the dinosaurs died just days before laying a clutch of eggs. Now, about 75 million years later, paleontologists are announcing their find of the fossilized mother-to-be and the eggs tucked inside her body.

AP - The State Department urged Americans on Wednesday to be aware of the risks caused by Tropical Storm Gustav to people traveling to Haiti, Jamaica, the Cayman Islands, Cuba and Mexico's Yucatan Peninsula.

Reuters - Astronomers have captured images of a powerful collision of galaxy clusters and say it may shed light on the behavior of dark matter.

AFP - A giant panda cub has been born at a Japanese zoo, the first to be successfully bred in Japan through artificial insemination in two decades, officials said Wednesday.

AP - An ancient tar pit exposed when Venezuelan oil workers laid a pipeline has yielded a rich trove of fossils, including a type of saber-toothed cat that paleontologists had never found before in South America. Scientists say the find holds the promise of many discoveries to come.

AFP - London shares closed higher on Wednesday, lifted out of earlier losses by an upbeat report on the US manufacturing sector which helped allay fears about the economic outlook, and amid a surge in oil prices.

AFP - Scientists have used gene therapy on mouse embryos to grow hair cells with the potential to reduce hearing loss in adult animals, according to a study released Wednesday.