Gabe Newell Keynote Talk
flickr/photos/jahansell/251755048
Fasten your seatbelts:
Soil Conservation Sustainable Agriculture. Major Agricultural Problems-SOIL Erosion = loss of soil particles due to water and wind action Over-cultivation.
Fasten your seatbelts: The future of learning is coming fast! Dr. Scott McLeod CASTLE.
Our kids have tasted the honey.
