In a Q&A, Julie Larson-Green explains why Microsoft felt it was necessary to rethink an operating system used by 1.2 billion people.
Why are we cramming 21st century technology into a socket designed by Edison?
Students anywhere are being offered free instruction online. What will that do to the trillion-dollar education business?
Aquion Energy says its batteries could make the power grid unnecessary in some countries.
First, they teleported photons, then atoms and ions. Now one physicist has worked out how to do it with energy, a technique that has profound implications for the future of physics.
A novel manufacturing method could make it practical to stack solar cells and convert more of the energy in sunlight into electricity.
A startup that might have a record-breaking solar cell is in danger of going out of business.
Technology is the primary cause of our skyrocketing health-care costs. It could also be the cure.
A letter to John Stuart Mill about the limits of what may be shown or said on the Web.
A 19th-century idea might lead to cleaner cars, larger-scale renewable energy.