Discovery Communications has partnered up with Leonardo Dicaprio to help them launch their Planet Green channel. Dicaprio will executive produce a 13-part series called Eco-Town, which will chronicle the "green" rebuilding of a small town in Greensburg, Kansas that was devastated by a tornado in May. Greensburg will be rebuilt as a "sustainable model of eco-living and one that will save it from future environmental catastrophe." Dicaprio will also serve on the board of advisers for Planet Green, which is set to launch in 2008.