Cyclists and people riding scooters along the Metropolitan Branch Trail are being greeted with digital messages either telling them their speed is safe or urging them to slow down.(WTOP/Scott Gelman) ...

There’s a seemingly unending list of modifications or upgrades you can make to a 3D printer. Most revolve around the ...

A simple software method to increase the duty-cycle resolution in a digital pulse width modulation (DPWM)-controlled power ...

Golfers play East Potomac's fifth hole as trucks unloads debris and soil from the demolition of the White House's East Wing on October 24. Tasos Katopodis / Getty Images Future control of Washington D ...

WASHINGTON, Dec 8 (Reuters) - U.S. military helicopters on training missions would need to broadcast alerts to nearby commercial aviation aircraft around Reagan Washington National Airport to avoid ...

Almost a year after the nation’s worst aviation disaster in decades, Congress is poised to give the military free rein to resume flying helicopters on training missions in Washington without using a ...

The Trump administration issued a notice of default to the group that manages Washington’s three municipal golf courses, escalating a behind-the-scenes struggle over who will control some of the ...