A comprehensive project to catalogue all the birds in North America has identified what may be 15 new species.
A novel fuel-injection system achieves 64 miles per gallon.
A startup is developing a simple ultrasound method to get cancer drugs into the brain.
Tesla launches a stationary battery aimed at companies with variable electricity rates and homes with solar panels.
A supercomputer specialized for the machine-learning technique known as deep learning could help software understand us better.
In a first-of-its-kind endeavor, electricity-starved Rwanda and the Democratic Republic of Congo are trying to get power from a lake—and avert catastrophe.
Nobody has been able to trap electromagnetic waves inside a metamaterial and then release them again. Until now.
The world’s poor could benefit from a system that is blanketing half Earth’s surface with a signal that provides free access to Wikipedia and other useful websites.
Many gadgets will be able to understand images and video thanks to chips designed to run powerful artificial-intelligence algorithms.