Cars are an essential part of life for many people, but new petrol and diesel cars will be banned from sale in 2030 to help reduce greenhouse gas emissions. Electric cards are selling fast, but are bit without controversy.

Justin Rowlatt, Michelle Ackerley and Dr Tara Shine investigate if it will be possible to heat British homes with green alternatives to boilers and build an entirely low-carbon electricity network before the government's net zero target of 2050.