"Unprecedented Ocean Warming Raises Concerns Among Scientists"

The world's oceans have experienced a sudden spike in temperature, well above record levels, in the last few weeks, with scientists trying to figure out what it means and whether it forecasts a surge in atmospheric warming. Some researchers think the jump in sea surface temperatures stems from a brewing and possibly strong natural El Nino warming weather condition plus a rebound from three years of a cooling La Nina, all on top of steady global warming that is heating deeper water below.