Pollution at many of Florida's best-known springs is killing aquatic ecosystems. Time is running out in this session of the legislature for a bill aimed at repairing and protecting Florida's aquatic gems.

A report issued by the National Academies' Institute of Medicine concludes that military service in the Gulf War has been a cause of the multisymptom illness known as Gulf War Syndrome.

"About 175 nations agreed a plan Sunday to salvage climate talks after the Copenhagen summit but the U.N.'s top climate official predicted a full new treaty was out of reach for 2010."

"Plumes of toxic, smog-causing chemicals from Barnett Shale natural-gas operations are so common that inspectors find them nearly every time they look, a Dallas Morning News examination of government records shows. What's more, the inspectors have rarely looked."

"President Barack Obama and presidents, prime ministers and other top officials from 47 countries start work Monday on a battle plan to keep nuclear weapons out of terrorist hands."