The Department of Justice's new booking in NoMa marks the first major federal lease signed under the Trump administration.

Trump rescinded two long-time executive orders that had encouraged agencies to prioritize urban areas and historic properties in decisions on federal buildings.

Fresh advances in 3D scanning technology are making it possible to explore some of the hardest-to-reach and most fragile sites on Earth. This rendering of the Titanic is based on 715,000 photos ...