See the top 4 lessons I learned when working with concrete. I made a concrete table top and learned what NOT to do along the way. Watch this video to see the concrete top table I made and the things I'll never do again.
The Vietnam Household Biogas Project is installing biogas systems across Vietnam which use waste from household cattle and pigs to create electricity for the home. This one-of-a-kind project is spreading renewable energy to households across Vietnam. The project installed 88,200 plants in households between 2007 and 2011, bringing clean energy to 840,000 people.