The NBA is doing its part to help save the world. The second annual "Green Week" kicked off Thursday and will run until April 9. The campaign encourages people to to be environmentally aware.

"I think more importantly it sends a message," Phoenix Suns point guard Steve Nash told The Associated Press. "It gets people thinking and asking questions, and then the more people that are able to affect their lifestyle and be a part of that movement, the better chance we have to curb the problem of global warming."

During Green Week, the NBA will show ways to help protect the environment. Players will wear 50 percent recycled polyester shirts. The NBA will auction autographed basketballs that are made from 40 percent recycled materials benefiting the Natural Resource Defense Council.

Teams will host local green efforts in their communities to celebrate the week. The Celtics are taking part and organizing a clean up day with eighth graders throughout Boston.

"It's important for us to be conscious of our impact on the environment, try to cater our lifestyle to sustainability for the long-term benefit of the planet,” said Nash, who practices what he preaches and drives a hybrid car.