What will it cost to transition the global economy to net zero? We take a look at how much money should be spent and where, in order to mitigate global warming. Charles Pellegrin speaks to Lord Adair Turner, Chair of the Energy Transitions Commission, a global coalition of leaders from across the energy landscape.

China has now relaxed many of its Covid restrictions, removing requirements for PCR tests in many places and allowing people to isolate at home. The new measures come following a wave of anti-lockdown protests.

The front pages continue their focus on Vladimir Putin's bloody offensive in Ukraine. We also look at how Poland is enjoying positive publicity for a change and hoping to redeem itself in the eyes of the EU after years of strained ties. Finally, we see how supermarkets are calling for an iconic British dish – chicken Kiev – to be renamed chicken Kyiv in honour of its Ukrainian spelling.

A pledge to end deforestation by 2030 is the first headline agreement from COP26. But environmentalists say the world's forests will not be saved by a political declaration alone.

Saudi Arabia, the world's top oil exporter, aims to achieve net zero carbon emissions by 2060, says Crown Prince Mohammed bin Salman, days before the COP26 global climate summit. In March, Saudi Arabia unveiled a sweeping campaign to tackle climate change and reduce carbon emissions, including a plan to plant billions of trees in the coming decades.