Biden's climate change summit

We focus on President Biden’s virtual climate summit, explaining the basics of climate change and hearing what the 40 leaders taking part in the summit are being urged to do. We also hear a conversation between three young climate activists in Indonesia, South Africa and Australia about what they want to hear from their leaders and what action they think is needed globally. And we are discussing solutions with experts and hearing messages from around the world about what steps people are prepared to take to fight climate change and also hear from a woman who has decided not to have children due to concerns over climate change.

We get more accounts of the coronavirus pandemic in India - the country has recorded the highest-ever daily number of new cases. There’s an acute oxygen shortage and we hear from those who have been posting appeals for oxygen on social media. And a lot of people are asking about “double and triple mutants of the virus” and their possible links to the current surges in India. Our regular medical expert Dr Emma Hodcroft, helps us answer those questions.

(Photo: A video monitor shows President Joe Biden speaking during a virtual international Leaders Summit on Climate, in the East Room of the White House, in Washington, DC, USA, 22 April 2021.Credit: AL DRAGO / EPA)