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Oil Sands: Energy Evolution and Environmental Concerns
science.howstuffworks.com/environmental/green-science/oil-sands.htm
Oil sands are a mixture of clay, sand and water with a small amount of bitumen. Learn about oil sands, find out how energy intensive it is to refine oil sands.
10 Advancements in Environmental Engineering
science.howstuffworks.com/engineering/civil/10-advancements-environmental-engineering.htm
Environmental engineering existed long before it had a name. It began at the dawn of civilization when we started changing our surroundings to meet our needs.
Ultimate Guide to Recycled Wine Bottle Crafts
lifestyle.howstuffworks.com/crafts/recycled/recycled-wine-bottle-crafts.htm
Recycled wine bottle crafts can be a lot of fun to make. Visit HowStuffWorks to learn all about making recycled wine bottle crafts.