Greenpeace’s “Global Warming Tour” will roll into South Park from noon to 3 p.m. Thursday.

Visitors will have an opportunity to record a video, write a postcard or send an e-mail to political leaders to demand action on global warming.

The tour is powered by the “Rolling Sunlight,” a demonstration and educational vehicle that runs on biodiesel and is equipped with 256 square feet of solar panels that supply enough energy to power three homes, concerts and other events.