"From a small spark, kindled in America, a flame has arisen not to be extinguished." — Thomas Paine The American Revolution didn't end at Yorktown. Its ideas crossed oceans, sparking revolutions and philosophies that would shape nations for generations. See how this "small spark" ignited global change in The American Revolution, a film by Ken Burns, Sarah Botstein and David Schmidt. Premieres Sun, Nov 16. | PBS

250 Years of Winning Our Nation's Battles For one quarter of a millennium, we have defended our country. From the birth of our nation during the American Revolution, to the end of the Global War on Terror, our role as a naval-based amphibious force has played a defining role in turning the tides of each conflict into our Nation’s favor. We have fought in every clime and place, and we maintain readiness to continue to be America's 9-1-1 anytime and anywhere we are called upon. Here's to the next

The American beaver's ability to nibble wood demonstrates the stunning adaptability of these amazing mammals. | BBC Earth