The Forgotten Era of Brain Chips
The work of Jose Delgado, a pioneering star in brain-stimulation research four decades ago, goes largely unacknowledged today. What happened?
Wireless access to the Internet via Wi-Fi is increasingly popular, so the technology is being upgraded to ensure that users get prompt, reliable service
in a Galactic Pond
Astronomers are coming to realize that the beautiful shapes of galaxies are not merely incidental. They are essential to the galaxies' growth and development
New Bull's-Eyes for Drugs
A familiar class of cell-surface receptors turns out to offer an array of fresh targets that could yield new treatments for disorders ranging from HIV infection to obesity
A special class of genetic mutations that often cause human disease is enabling scientists to trace the migration and growth of specific human populations over thousands of years
Better Than a Dog
The search is on for a sensor that bests a canine at detecting explosives
A Cool Early Earth?
The textbook view that the earth spent its first half a billion years drenched in magma could be wrong. The surface may have cooled quickly--with oceans, nascent continents and the opportunity for life to form much earlier