Engineering publications brought to you by Mark Allen

Electronics

Lord Drayson launches Freevolt energy harvesting device

NASA uses orbital technology to confirm flowing salty water on Mars

Optical sensors bring light touch to robot hands

Recycled Tube energy to power stations

Bloodhound meets its public

Airport scanner technology uses X-ray diffraction to identify materials and detect explosives

Blisk business

Tadpole endoscope offers new hope for gastrointestinal cancer detection

Booze in Space: the orbital dram

The Engineer Q&A: Space elevators

Mouth guard sensor monitors saliva for signs of illness and stress

Robots help create 3D map of subsea canyon