Here's what happened to sea levels the last time Earth was this warm

JOHN C. KOSTELNICK (DATA), GSFC/NASA (VISUALIZATION) The last time Earth's thermostat was cranked as high as it is today, sea levels were high enough to completely drown New Orleans (had it existed at the time), new research suggests. Ocean surface temperatures around 125,000 years ago were comparable to those today, researchers report in the Jan. 20 Science. Previous estimates suggested that this period, the height of the last warm phase in the ongoing ice age, was as much as 2 degrees Celsius ...