When Veronica White and Tom Thompson stand on the coastline of their respective cities, 680 kilometers (423 miles) apart, they gaze out at the same ocean, but see different things.

White, the commissioner of the New York City Department of Parks & Recreation, believes ‘we have to prepare the entire coastline for disasters, including storms and rising floodwaters.’ Thompson, a former city planner in New Bern, North Carolina — an eight-hour drive to the south — argues the opposite. ‘All this panic about the climate always amazes me, but people like to believe horror stories,’ he says.

Since 1900, the sea level in both cities has risen by about 30 centimeters (12 inches). According to calculations by a group of climatologists working for New York City, the sea level in that city could rise by more than three-quarters of a meter (2.5 feet) by 2050, and by one-and-a-half meters 30 years later. The group of experts warns that by the end of the century, average temperatures in New York could be as high as they are in North Carolina today.

According to the North Carolina Coastal Resources Commission (CRC), that state, like New York, will also see warmer temperatures by the end of […]