New charts and data show how corporate demand could boost clean energy investment in regions where renewable energy potential is strong but wind and solar power have lagged.

Large parts of Appalachia’s forests, once owned by coal companies, now make money for investors by storing carbon. But the results bring few jobs or sizable investments for residents.

Tornadoes in December aren’t unusual in the Gulf Coast and lower Mississippi Valley states, but the Dec. 10-11 outbreak was extreme and far-reaching.

For thousands of years, Native Americans left their artistic mark deep within caves in the American Southeast. It wasn’t until 1980 that these ancient visual expressions were known to archaeologists.