Scientists already know that mercury can be a hazardous neurotoxin to both fish and anglers chowing down on their catches. But a plan to monitor the way the heavy metal cycles through the environment has taken on a new significance at a reservoir in northern Colorado.
Republican presidential candidate Mitt Romney says America's national security priority should be preventing Iran from acquiring a nuclear weapon, and he was talking tough about this in his recent stop in Jerusalem.
"History teaches with force and clarity that when the world's most despotic regimes secure the world's most destructive weapons, peace often gives way to oppression, to violence, or to devastating war," Romney said. "We must not delude ourselves into thinking that containment is an option."
Ulises Aquino was already one of Cuba's best-known baritones when he founded his own company, Opera de la Calle, or Opera of the Street, in 2006. By combining Cuban rhythms and dance with his formal musical training, he won fans at home and abroad.
Aquino also considers himself a good "revolucionario," meaning he's a loyal supporter of Cuba's socialist system. And when President Raul Castro urged Cubans to increase productivity by starting small businesses, Aquino answered the call.
The technology that makes walking possible for amputees is also making running possible at the Olympics. On Saturday in London, South African Oscar Pistorius will run on artificial limbs in the 400-meter sprint. Pistorius is a double amputee who runs world-class times on his carbon-fiber legs.
At last month's Prefontaine Track and Field Classic in Eugene, Ore., Pistorius ran in the inside lane of the 400-meter race. He leaned forward on his knees and fingers, and slipped his feet into the starting blocks — well, they're not actually feet.