In this May 9, 2013 photo, Richard Lariviere, president and CEO of Chicago's Field Museum of Natural History, poses with Sue, the towering tyrannosaurus rex that greets visitors to the

 

              In this  May 9, 2013 photo, Richard Lariviere, president and CEO of Chicago
In this May 9, 2013 photo, Richard Lariviere, president and CEO of Chicago's Field Museum of Natural History, poses with Sue, the towering tyrannosaurus rex that greets visitors to the museum. The museum, one of the world's pre-eminent research centers with a 25 million-piece collection of plants and animals used to examine everything from genetics to climate change, is facing budget problems that is forcing it to cut research staff. Lariviere says the museum is poised to recover financially within two years. But some scientists say the cuts in its research operations will be significant. (AP Photo/M. Spencer Green)