The massive ship is anchored in Stokes Bay in the Solent because it is too big to sail into Portsmouth Harbour. We have a look at the world's ten biggest and most powerful aircraft carriers. Above: Nimitz Class aircraft carrier USS Theodore Roosevelt as she departed Naval Station Norfolk, Virginia. Nimitz Class, with a full load displacement of 97,000 tonnes, is the world's largest aircraft carrier. The first carrier in the class was deployed in May 1975, while the tenth and last ship, USS George H.W. Bush (CVN 77), was commissioned in January 2009.
Groundwater pollution differs from surface water contamination in several important respects. Among them, it does not typically flow to a single outlet. It can affect people through wells dug in a contaminated aquifer, as it can flow into streams or lakes.
Decoder Joe Biden's not running (yet), but an ad promoting him is (+video). The Ogallala aquifer, a critical water source for US farmers, could dry up within the next 50 years, according to a report issued this week. Limited water supplies from the Ogallala aquifer will begin to have a significant impact on food production over the next few decades, the report said.