Forecasters and scientists are predicting an El Nino year. Antonio Neves reports on the climate patterns and chain of events that occur around the world.
Elana Michelle reports on pollution in the Chesapeake Bay, how it affects the watershed, and the roles of government and citizens in this environmental crisis.
Correspondent Spencer Michels gets a lesson in space technology and career education from the NASA team leader of the Mars Rover mission.
Elana Michelle investigates why young athletes are incurring more concussions during team sports.
Julie Iriondo reports on the 100th anniversary of the famous Antarctic expedition by Sir Ernest Shackleton to be recreated in 2014 with modern equipment.
Correspondent Miles O'Brien investigates scientific experiments on chimpanzees and the ethical implications for animal rights.