China's latest Olympics nightmare is a vast algae bloom that covers one-third of the sea where the world's best sailors are supposed to be competing in just over a month.
From the sensible to the silly, there is no shortage of suggestions from spectators lining the banks of a river near the Jersey shore on how to get a group of bottlenose dolphins back into the ocean.
A new energy concept called a solar tower could generate enough electricity for 200,000 homes. It would release no noxious fumes ? just sun-heated air.
From climate change to volcanoes and earthquakes, the world's growing challenges have some former U.S. officials proposing a merger of federal agencies that study earth sciences.
The Alaska Supreme Court has ruled that an initiative to regulate or restrict pollution from mining can be placed on the ballot in August for voters to consider.
