Soil erosion and Climate Change
I'm not a Climate Change person in the least, but I did find this TED Talk very, very interesting and informative. This gentleman talks about losing large swaths of land mass to desert-like conditions throughout the world. His solution is one that I think can benefit the world and some within the Grow Network's community; i.e. those living in dry, arid lands.
Check it out and tell me what you think!