The Mediterranean's warming waters are drawing hundreds of invasive species

ROME -- The Mediterranean of our ancestors is no more.Scientists say climate change, caused mainly by burning oil, coal and gas, is making the Mediterranean Sea hotter, bringing hundreds of new and invasive fish species that decimate indigenous populations.As biodiversity diminishes, coastal communities will struggle to make ends meet in the ways they’ve known for generations.“The Mediterranean of our grandfathers, of our elders, and of the Greeks, of ancient Greece is lost forever. So many of those changes are irreversible,” said Ernesto Azzuro, a marine biologist with the Italian National Research Council's Institute for Marine Biological Resources and Biotechnology.Scientists have designated the Mediterranean as a climate change “hot spot,” with its waters expected to warm by 2 to 6 degrees Celsius (3.6 to 10.8 degrees Fahrenheit) by 2100. Heat waves are likely to become more frequent and more extreme, according to the Mediterranean Experts on Climate and Environmental Change, an independent network of scientists.Ronan McAdam, an oceanographer with the Euro-Mediterranean Center on Climate Change, said a key factor in the warming is that the sea is an enclosed basin and warmth ca...