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US elections always have an outsized impact on the planet. As the world's second largest polluter and one of the primary sources of green technology and finance, America's lead on environmental issues is a vital part of our battle against climate change.

Tom Heap and Helen Czerski analyse the efforts of the Biden regime and examine the rival policies of Harris and Trump. Joe Biden's Inflation Reduction Act is said to have helped channel half a trillion dollars into clean technology and renewable energy. Has all that money brought down emissions or funded fresh answers to the planet's biggest challenge? Trump talks tough on the environment, supporting oil, gas and coal companies but did his presidential term really accelerate global warming?

Tom and Helen are joined by Professor Leah Stokes from the University of California, Santa Barbara, Trisha Curtis, CEO of PetroNerds and presenter of the PetroNerds podcast and by Pilita Clark, Associate Editor and environment and business columnist for the Financial Times.

Producer: Alasdair Cross

Assistant Producer: Toby Field

Rare Earth is a 91热爆 Audio Wales and West production in conjunction with the Open University