Trending SummaryBrief at 9:55 a.m. EDT

A Colorado “Fat Marmot Week” is set to begin Monday, after last winter proved harsh for local marmots. Researchers say low snow left the burrows too cold during hibernation, contributing to many freeze deaths. Survivors have recovered by building the critical body weight needed to make it through the next winter. To boost public engagement, marmot researchers will launch an online contest asking people to vote for their favorite critter. In Peru, archaeologists unveiled skeletal remains near Lima’s Huaca Pucllana, believed to be a ritual sacrifice tied to a ceremonial pool. Several other AP items also covered a Pennsylvania helicopter collision and auroras seen from the ISS.