The city of Mayapán was the largest Mayan city from approximately 1200 to 1450 AD. It was an important political, economic and religious center, and the capital of a large state that controlled much of northwestern Yucatan in present day Mexico.
The U.S. Forest Service announced Friday it's taking emergency action to save giant sequoias by speeding up projects that could start within weeks to clear underbrush to protect the world's largest trees from the increasing threat of wildfires.
The roar of Dario Vicini's motorcycle cuts through the silence as he drives across his rice paddy to survey the destruction wrought by Italy's worst drought in 70 years.
About three years ago, Wolfgang "Wolfi" Mittig and Yassid Ayyad went looking for the universe's missing mass, better known as dark matter, in the heart of an atom.
Imagine being able to hide an extremely complex encryption password or detailed financial information for an organization inside the chemical structure of ink. It might sound like something out of a spy movie, but scientists at The University of Texas at Austin and the University of Massachusetts Lowell recently proved it possible.