Historian Natalia Mehlman Petrzela explores life, love and death on Earth's second-tallest peak in the new season of Extreme.

In the last two weeks, the pair has put in two impressive ski-mountaineering days in the Ecrins Alps where they live. First ... there’s no better training for K2, which he intends to climb ...

K2, located in the Karakorum mountain range, is one of the most dangerous climbs. Last month, team of 10 Nepalese climbers made history by scaling the K2 for the first time in winter.