Tracking Harvey: Before-and-after images show the catastrophic flooding in Houston

Hurricane Harvey, which has since been downgraded to a tropical storm, has dumped over 2 feet of rain on Houston, Texas, and two more feet are expected. The forecast suggests Houston will get 50 inches of rain — as much as the city of 2.3 million people usually receives in an entire year. The deluge has turned the city's roads into rivers, covered in feet of water: Here's what Houston looked like before and after Hurricane Harvey: Since the storm's landfall on Friday, Houston has received over...