The actor and activist was speaking to the BBC at a summit organised by his Climate Initiative.

The 6.4 magnitude earthquake interrupted the broadcast, shaking the equipment in the studio.

The BBC’s Nomia Iqbal speaks to voters in Philadelphia, where the tech billionaire campaigned for the president and even gave away a few $1m cheques.

Leaders of the far-right group, who were convicted and later pardoned, allege their constitutional rights were violated.