"Manley Hot Springs"

The necropsy results for an Iditarod dog that died Friday while flying to Anchorage indicate that it died from overheating.

During the first night of this year’s Iditarod, teams endured frigid temperatures on the Tanana River to reach the second checkpoint of Manley Hot Springs. Teams are adjusting to the deep cold and preparing to push to the Yukon River, where the race will unfold.

Four scientists embarked on a trip to install a dozen sensitive ground-motion detectors in what they call the Minto Flats seismic zone.