The world's major economies must do more at the upcoming U.N. COP26 climate summit in Scotland to show they are serious about wanting to tackle global warming and heed the warnings of young activists, policymakers.

COP26 President Alok Sharma said there was renewed urgency in the climate debate following preparatory talks in Milan where thousands of youth activists, including Greta Thunberg, urged governments to match words with action and stump up billions of dollars to wean the world off fossil fuels. "We had a very constructive set of discussions and there was a real sense of urgency in the room," Britain's Sharma told reporters after the meeting in Italy's financial capital. The world's major economies must do more at the upcoming U.N. COP26 climate summit in Scotland to show they are serious about wanting to tackle global warming and heed the warnings of young activists, policymakers. COP26 President Alok Sharma said there was renewed urgency in the climate debate following preparatory talks in Milan where thousands of youth activists, including Greta Thunberg, urged governments to match words with action and stump up billions of dollars to wean the world off fossil fuels.

"We had a very constructive set of discussions and there was a real sense of urgency in the room," Britain's Sharma told reporters after the meeting in Italy's financial capital.