A solar panel is seen in the snow at Summit Station, which is a scientific research station sponsored by the National Science Foundation, operated by CH2M Hill Polar Services (CPS) with research guidance from the Summit Science Coordination Office, where year-round monitoring of key climate variables are conducted to study air-snow interactions on July 11, 2013 at Summit Station, Greenland. (credit: Joe Raedle/Getty Images)

US Racing To Keep Pace With Stepped-Up Activity In Arctic Frontier

The U.S. is racing to keep pace with stepped-up activity in the once sleepy Arctic frontier, but it is far from being in the lead.