The USGS publishes free topographic maps that show trails, rivers, and campsites in great detail for hikers, cyclists, and ...

Ukraine could receive a newly developed land-based launcher to strike Moscow and beyond. By John Ismay Reporting from Washington President Trump has hinted that he may send Tomahawk cruise missiles to ...

Abstract: Contour mapping is a crucial part of many wireless sensor network applications. Many efforts have been made to avoid collecting data from all the sensors in the network and producing maps at ...

Jutting from the deep briny mists of the mid-Atlantic, some 800 miles (1287 km) due west of Portugal, the Azores strike one as bejeweled, fern and flower-encrusted baubles in a vast expanse of blue ...