Get our introductory offer at only
*$0.99/month for first 3 months
$29.90/month for the next 9 months
IT'S lunchtime at Yum's, and about a dozen construction workers are on break, scanning the menu board at the 30-year-old take-out spot in the District of Columbia (DC).
Behind the counter, cooks prepare orders of rice, chow mein and fried chicken - alongside the city's...