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Heat Is Costing the U.S. Economy Billions in Lost Productivity
(www.nytimes.com)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
The Nordhaus estimates were always known for having limited utility for large changes in temperatures.
They assumed that damage to a sector wouldn't matter much if it was currently a small part of the economy. For example, if agriculture was 2% of the US economy, and agricultural output went to zero, the result would be 2% damage to GDP. The real world doesn't work that way though: people who are starving to death don't work, so GDP would go to zero in that case.