New US emissions target for a 'decisive decade'

President Biden opens the most important global climate conference for six years, pledging a greater cut in US carbon emissions and appealing to other leaders for decisive action.

Also in the programme: We've got a rare interview with the governing BJP in India on a Covid crisis getting worse by the day; and should solitary confinement in prisons be legal?

(File photo: A coal-fired heating complex in Harbin, Heilongjiang province, China. Picture taken November 15, 2019. Credit: Reuters/Muyu Xu/File Photo)