With the 2022 Beijing Winter Olympics right around the corner, experts are warning that climate change is threatening not only the event but also the future of snow sports. Despite being the world's top polluter, China is hoping to use the event to demonstrate the country's commitment to fighting climate change, and pledging to host a "low carbon" games. Xubin Zeng, professor of hydrology and atmospheric sciences at the University of Arizona, joins Cheddar News.