Working in the deep sea at the source of the Gulf oil spill is a bit like working in space, say scientists. It's a hard place to get to, a tricky space in which to maneuver, and subject to daunting laws of physics.
In the Pacific, jumbo squid have moved to new waters, signaling changes in the ocean, scientists observe.
Rising levels of carbon dioxide make oceans more acidic, putting shellfish, corals, and more at risk.
Rising acidity in oceans and accelerating wind patterns may lead to unexpected changes.