Computer-based brain training looks to be effective for treating some symptoms.
SpaceX is talking with NASA about a mission to Mars, on the cheap.
Human DNA includes eight nucleotides instead of the four originally identified.
The technique could create replacement organs faster than previously tested methods
The rollerball pen dispenses conductive silver ink, enabling electrical circuits to be drawn directly on paper and other surfaces.
Sharply reducing emissions of soot and smog could play a critical role in preventing Earth from overheating.
Temperature-sensitive fibers change color in the presence of heat generated by infections or inflammation.
Young scientists receive awards in international competition.
An archipelago of sporting facilities, administration buildings and housing accommodations could be towed along waterways to major cities.
Guest contributor Robert Adams explains his mission analysis role in Project Icarus and discusses how a spacecraft could travel to another star.