Faces of Ancient Europe / Flickr

In looking to our past, a curious trend appears. A vast amount of mankind's great accomplishments in art, music, science, technology and language seem to emerge from a relatively small number of cities:  Athens, Hangzhou, Florence, Rome, Calcutta, Vienna, and Silicon Valley-- just to name a few.

The floods that hit Louisiana last month were caused by rainfall that was unlike anything seen there in centuries. Most of the southern part of the state was drenched with up to 2 or 3 inches in an hour. A total of 31 inches fell just northeast of Baton Rouge in about three days; 20 parishes were declared federal disaster areas.

Climate scientists and flood managers suspect there could more like that to come — in Louisiana and in other parts of the country.

HBarrison / Creative Commons

The northeast congressional delegation is rallying in support of a comprehensive management plan for the Atlantic Ocean -- the nation's first coordinated strategy for federal waters. 

Patti / Flickr

It's easy to think of borders as fixed, almost sacrosanct lines, so rooted in the natural order of things that it often doesn't occur to us to question them. But borders were not always thought of this way. In fact, the notion of well understood, and agreed upon boundaries between nations is somewhat new.

Ever stood on the coastline, gazing out over the horizon, and wondered what's on the other side? Pondered where you'd end up if you could fly straight ahead until you hit land?

Turns out the answer might be surprising. And even if you pulled out an atlas — or, more realistically, your smartphone — you might have trouble figuring it out. Lines of latitude won't help, and drawing a path on most maps will lead you astray.