Both the old best and worst case future scenarios in the fight against climate change are being jettisoned by the world’s top scientists as they prepare the next series of huge United Nations reports.

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American cross-country skier Jessie Diggins joins The Lead.

This is read by an automated voice. Please report any issues or inconsistencies here. WASHINGTON — Scientists are jettisoning their worst- and best-case scenarios for a warming world as no longer ...

Scientists are jettisoning their worst and best case scenarios for a warming world as no longer plausible. That shows how modest gains in the fight to curb climate change have dialed back the most ...