India, Oct. 9 -- As vulnerable nations face existential threats, the upcoming UN CoP 30 summit in Belem confronts the critical question: can global leaders finally rise to the climate challenge, or will inadequate commitments continue to imperil humanity?

Frequent and destructive climate events from heat waves to wildfires to drought to heavy downpours causing landslides and flooding across the countries in recent months have disrupted lives and livelihoods resulting in loss of GDP growth everywhere. World leaders have rolled out some actions against Trump's tariff imposition on imports, but none have come up with proper action against his attack on environment. Top economists Catherine L Kling, Stephen Polasky and Kathleen Segerson have...