Signatories include scientists from US, EU, India and African and South American countries
Chief scientists and presidents of the national science academies of more than 20 countries including Sir Patrick Vallance have written to world leaders ahead of the Cop26 climate summit, urging them to set out policies to reduce greenhouse gas emissions sharply, to limit global heating to 1.5C.
Governments must rapidly step up their policies to deploy low-carbon energy and other technologies and address emissions from the main high-carbon sectors of the economy, as well as bring forward innovative technologies, the signatories urged.