A new material that requires no electricity uses the universe as a heat sink—even when the sun is shining.
An app called MeshMe lets you communicate without a cellular or Wi-Fi connection, providing enough other users are close by.
A computer mouse that wraps around your finger is nice for a while, but it’s much too awkward.
An experiment involving a chip on a small drone shows how hardware modeled on the brain could provide useful intelligence.
A treatment based on embryonic stem cells clears a key safety hurdle and might help restore vision.
A Texas company says it can make a new ultracapacitor power system to replace the electrochemical batteries in everything from cars to laptops.
A circuit that lets a radio send and receive data simultaneously over the same frequency could supercharge wireless data transfer.
An open payments system built into Web standards could transform online life, if the proposal takes off.