Roads are made of asphalt, an environmentally polluting petroleum product. Researchers have been looking for a low-cost, sustainable replacement. Now they have found that pig manure is rich in oils very similar to petroleum, at a grade too low to make gasoline but suited for asphalt. The group developed a process that turns the waste into a black crude—the sticky binder that can be used to make asphalt. The cost to process the manure oil is $0.56 a gallon, which is much cheaper and greener than current petroleum binders.
Sustainable road building: Pig manure can replace asphalt
More of Today's Solutions
A 58-day protest campaign just convinced Etsy to ban fur
BY THE OPTIMIST DAILY EDITORIAL TEAM The Coalition to Abolish the Fur Trade did not simply write a letter. For 58 days, CAFT ran ...
Read MoreWhy your wandering mind is exactly what meditation is for
BY THE OPTIMIST DAILY EDITORIAL TEAM Most people who try meditation for the first time expect their mind to go quiet. Instead, it does ...
Read MoreFive steps for making your clothes last as long as possible
The clothes we wear can make us feel confident and help us express our inner selves. Unfortunately, our culture of fast fashion produces these ...
Read MoreHere’s why grapes are good for your gut
The health benefits of grapes Grapes are the perfect, portable healthy snack to eat. Enclosed in their bite-size shells, they are a widely popular ...
Read More
