India, Nov. 5 -- Scaling up six climate and health interventions could prevent 1.56 million deaths and 16.67 billion tonnes of greenhouse gas emissions annually, according to WHO.

The measures could generate $3.92 trillion in annual economic welfare benefits and $5.44 trillion in fiscal benefits.

Five interventions with measurable costs could deliver an estimated $24 in benefits for every $1 invested.

Heat-health warning systems offer the highest return on investment, generating an estimated $835 in benefits for every $1 spent.

More efficient fossil fuel pricing, including removing inefficient subsidies, could deliver the largest overall economic gains, with substantial benefits for low- and middle-income countries.

Scaling up six cl...