Climate: Action needed for the world to remain liveable

A UN report on climate change is expected to say rapid, systemic transformation is needed across all parts of society to ensure that the world remains liveable. The world’s top environmental experts will warn that the earth is in so much danger from climate change that we need to start actively sucking carbon emissions out of the air. We'll hear what this actually means for the planet.

Also, Ukraine has started a war crimes investigation after bodies of civilians were found strewn on the streets as Russian troops pulled out of areas around the capital Kyiv. The towns of Bucha and Irpin were symbols of resistance to the Russian invasion, but they are now becoming synonymous with the war's most serious abuses. Ukrainian authorities say the bodies of 410 civilians have been found in the areas around Kyiv so far. Russia, without evidence, says the photos and videos are "a staged performance" by Ukraine. We'll speak to our correspondents to find out what we know and hear from people from these towns.

And, in Sri Lanka public protests are continuing against worsening shortages of fuel, food and medicines. Demonstrators accuse the government of mismanaging the economy. The country's cabinet and central bank governor have all quit as anger grows. We'll speak to protestors there to hear what they want.

(Photo: A man places his hand on the parched soil in the Greater Upper Nile region of north-eastern South Sudan, Africa 08/04/12. Credit: Julien Behal/PA Wire)