Living car-free might be "the most impactful thing we can do to reduce our transport emissions", according to Dr Jennings.

Small steps still have an impact, like walking and cycling to the local shops or sharing car journeys with friends or neighbours.

Electric cars are becoming more widespread, but they are still expensive. And it is only truly green travel if the electricity used to power the car comes from green energy sources, such as wind or solar. Low-carbon sources made up 58% of the UK's electricity in 2020, including nuclear .

From installing a heat pump to turning down the heating, there is a raft of changes around the home that can help the planet .

"Switching from a gas or oil-powered heating system to an electric heat pump makes a considerable difference," ...