transportation

When engineers build roads, they use weather models to decide what kind of pavement can withstand the local climate. Currently, many American engineers use temperature data from 1964 to 1995 to select materials. But the climate is changing.

A larger percentage of black drivers than white drivers are stopped by police, according to a 2013 report from the federal Bureau of Justice Statistics. A higher percentage of black drivers are searched. And black drivers are much less likely than white drivers to believe police had a legitimate reason for pulling them over.

A new study suggests that laws allowing police to directly cite motorists for not wearing seat belts may be less effective than they once were at reducing accident deaths.

Airplanes are now the largest source of lead pollution in the United States. A new study suggests Americans hurt by lead exposure may be suffering billions in lost wages.