Dr. Tony Stewart, with his hands and face exposed to the sun, checks a cable during construction work at Cape Denison, East Antarctica December 20, 2009. Expeditioners to Antarctic train for freezing temperatures and social isolation, but a study has found there is something else to be wary of -- sunburn. The recent joint study by the Australian Antarctic Division (AAD) and the Australian Radiation Protection and Nuclear Safety Agency found that more than 80 percent of researchers to the South Pole were potentially exposed to ultraviolet (UV) rays in excess of the recommended limits. Picture taken December 20, 2009. To match Reuters Life! ANTARCTICA-SUNBURN/ REUTERS/Pauline Askin (ANTARTICA - Tags: ENVIRONMENT HEALTH SOCIETY)