Climate enters the overshoot era—science and policy need to react

[John Nissen]

Hi Oren and everyone,

A policy rethink must involve the previously "unthinkable" SRM: the only way to reverse global warming on a meaningful timescale. And the priority has to be on halting Arctic meltdown because of a rapidly approaching point of no return when even SAI would be unable to halt it.

Cheers John from mobile 

Climate enters the overshoot era—science and policy need to react https://share.google/LAdFTQK4mbwQgnAaG 

[John Nissen]

The paper is here, but not a hint of SRM requirement!  The loss of planetary albedo, shown by the CERES satellites, puts a nail in the coffin for any kind of emissions reduction policy. Accountability needs to include the cost of not applying SRM in time to halt Arctic meltdown and the resultant catastrophic climate change and sea level rise.

Ganti et al. (Nature, January 2026)

Exceeding 1.5C requires rethinking accountability in climate policy

https://www.nature.com/articles/d41586-026-00247-y