Alaska's heaviest glaciers are approaching an irreversible tipping point

Melting of one of North America's largest ice fields has accelerated and could soon reach an irreversible tipping point. That's the conclusion new research colleagues and I have published about the Juneau Ice Field, which straddles the Alaska-Canada border near the Alaskan capital of Juneau. in the summer of 2022, accompanied by other researchers, I skied across the flat, smooth and white ice field platform, gliding in the footsteps of the person in front of me under the hot sun. About 40 huge, interconnected glaciers descend from this plateau to the sea, with hundreds of smaller glaciers on mountain tops all around. (Bethan Davies, The Conversation, more at phys.org)