Parishioners in Pontefract are ditching their cars and walking to church this weekend.
The invitation was made by the Bishop of Pontefract, Tony Robinson, for Climate Change Week, which ends tomorrow.
Bishop Robinson is urging congregations to think seriously about the small steps they can take to reduce their impact on the environment.
"It doesn't take much, just simple things like remembering to turn off a light or leave the car at home for once," he said.
"And this Sunday, if you can't walk or cycle to church why not share the car with someone – it's little things that can really add up and make a difference."