Abstract: Craters are the key features of a planet’s surface, often referred to as the "living fossils" of the solar system’s history. However, due to significant variations in the distribution of ...

Also: What's wrong with you? By Tony Maglio Martin Short is not a national treasure — the Canadian comic actor and Hollywood superstar is a full-on continental treasure. In addition to (Lawrence) ...

Hidden within the porous limestone of the Yucatan Peninsula is a vast subterranean world where an ecosystem, millions of years in the making, has been found to be dependent upon a genus of cave ...