Uploaded August 2026 | Updated September 2026, 3 weeks ago
How much will climate change really cost?
Matthew Kahn, USC economist, argues the best economic estimates point to damage the world can absorb: a loss of a few percentage points spread across a century of growth.
Kaveh Madani, environmental scientist and director of UNU-INWEH, argues those numbers can't carry that much weight. The same research tells a far darker story under different assumptions, and every model is only as good as what's fed into it.
Watch the full debate with the link in our bio.
How much will climate change really cost?
Matthew Kahn, USC economist, argues the best economic estimates point to damage the world can absorb: a loss of a few percentage points spread across a century of growth.
Kaveh Madani, environmental scientist and director of UNU-INWEH, argues those numbers can't carry that much weight. The same research tells a far darker story under different assumptions, and every model is only as good as what's fed into it.
Watch the full debate with the link in our bio.
