Nuts + Bolts

After vowing not to spend additional money building the wall on the U.S.–Mexico border begun by the Trump administration, President Joe Biden has authorized construction of a new, 20-mile section of the wall in Starr County, Texas.

Researchers at the University of Missouri are experimenting with using plastic waste and other recyclable materials to pave traditionally asphalt roads and highways. Partnering with the Missouri Department of Transportation, the Mizzou Asphalt Pavement & [...]