Blood and soil testing confirmed the health consequences. Then we tracked individual shipments to the United States.

With the arrival of Amazon’s Zoox robot taxi in San Francisco to compete with Waymo, autonomous services are gaining momentum. But there are pros and cons.

The variety of federal forces deployed to support President Trump’s mass deportation campaign and anticrime efforts continues to expand. Often, it can be difficult for the public to tell them apart, or to understand what powers each agency has.