- 1 / 2
Priyanka Chopra and Rahul Bose will compete on World Environment Day, June 5, to motivate people to do their bit to save earth.
The stars face off in a new video for the ultimate Environment Day Challenge - where they are calling individuals, groups, families and schools, even entire communities - to post details of their green activities online at www.wedchallenge.org/india.
"And for Priyanka and Rahul, this is where the battle lines get drawn. When registering a green activity on the site, people will have the opportunity to pledge their activity to either one celebrity or the other," said a statement from the UN in New Delhi.
Priyanka has pledged to plant a tree for every green activity registered in her name while Rahul has pledged to plant two.
"Whether it's switching from plastic bags to cloth bags, car-pooling with colleagues or organising a tree-planting day, green activities can be big, small, local, international, noisy, quiet just as long as they're green," it said.
India is, for the first time, the global host of the United Nations Environment Day this year.