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
The story “pedal”-er: how an ice-cream cart library is changing lives in Karachi
Mohammad Noman bikes carefully and purposefully through the labyrinthine lanes of Karachi's Lyari Town, among the rush and bustle of everyday life. Though his ...
Read MoreScientists astonished to find 700 new species in Cambodia’s mysterious ...
Embark on a journey to discover the hidden riches concealed beneath Cambodia's mangrove forests, where nature thrives against the backdrop of endangered landscapes. A ...
Read More4 simple ways to feel at your absolute best this summer
The sunshine of summer is enough to make you feel better than you usually do throughout the year. But with a few changes to ...
Read MoreIndians recently planted 250 million trees—while socially distancing
India is committed to keeping a third of its total land area under forest and tree cover. In recent years the country has mobilized ...
Read More
