US' tallest peak's climbers may have to pack, carry own poop
Climbers on Denali, North America's tallest mountain, may have to pack and carry their poop with them after an expert found the glacier was not decomposing human waste. Officials have proposed that climbers drop human waste in only one high crevasse and carry the rest of it. This comes amid concerns the waste could affect the 20,310-feet-high mountain's environment. 