Engineering

New 3D-printing method builds structures with two metals

Taking a cue from the structural complexity of trees and bones, Washington State University engineers have created a way to 3D-print two types of steel in the same circular layer using two welding machines. The resulting ...

Robotics

Mori3: A polygon shape-shifting robot for space travel

By combining inspiration from the digital world of polygon meshing and the biological world of swarm behavior, the Mori3 robot can morph from 2D triangles into almost any 3D object. The EPFL research, which has been published ...

Hi Tech & Innovation

Preventing vehicle crashes by learning from insects

Despite only about 25% of car travel happening after dark, almost half of fatal accidents occur at night. As our vehicles become more advanced and even autonomous, the ways of detecting and avoiding these collisions must ...

Engineering

Are we there yet? Time slows down on crowded train

Testing time perception in an unusually lifelike setting—a virtual reality ride on a New York City subway train—an interdisciplinary Cornell research team found that crowding makes time seem to pass more slowly.

Energy & Green Tech

Power supply: Understanding unstable grids

A sustainable energy supply requires the expansion of power grids. However, new transmission lines can also lead to grids becoming more unstable rather than more stable, as would be expected. This phenomenon is referred to ...

Computer Sciences

Optimizing traffic signals to reduce wait times at intersections

Traffic lights at intersections are managed by simple computers that assign the right of way to the nonconflicting direction. However, studies looking at travel times in urban areas have shown that delays caused by intersections ...

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