The man contacted Sweden's nuclear authority and asked if it was permitted for an individual to build a nuclear reactor.
Rover "Curiosity" ups the ante in search for life beyond Earth, but can't directly detect Martian life.
Japan will seek to extract natural gas from seabed deposits of methane hydrate, also known as "burning ice," in the world's first such offshore experiment.
The rollerball pen dispenses conductive silver ink, enabling electrical circuits to be drawn directly on paper and other surfaces.
A computer chip marinated in neurons and stem cells creates super bursts of activity and could someday help stroke victims' brains heal.
Researchers in Australia showed that a class of compounds called nitric oxide donors delays the entry of toxins from potentially deadly snakebites.
But they don't yet have names. What would you call them?
Young scientists receive awards in international competition.
The development might be used to design faster quantum computers.
But don't trade in the firefighting hose for a electrical wand just yet.