Arctic sea ice has melted dramatically this summer, smashing the previous record. The Arctic has warmed dramatically compared with the rest of the planet, and scientists say that's what's driving this loss of ice.
To be sure, ice on the Arctic Ocean always melts in the summer. Historically, about half of it is gone by mid-September. But this year, three-fourths of the ice has melted away, setting a dramatic new benchmark.
For many years — perhaps even decades — Detroit has been the poster child for economic malaise. Adjusting for inflation, per capita income in metro Detroit dropped more than 20 percent between 1999 and 2010.
Some analysts say regional cooperation might have helped keep Detroit above water when the car industry sank, but that entrenched divisions that pit the city against its suburbs, and blacks against whites, have hindered that.