Yes I have been researching many ways to contribute to these causes. For SMB's first major contribution I am working out the details on how to orchestrate a mass tree planting for the up coming earth day!
These types of projects require money and man power, say we are able to donate enough money to plant 10,000 trees the first year @ $5/tree, these trees have to be grown, moved, and then planted. Another thing to consider is what trees are native to the areas they will be planted in, and where is a suitable location to plant.