We put Yahoo Answers, Amazon's Askville, and rival question-and-answer services to the test.
There's much in store for our artificially intelligent friends next year.
The use of vehicles that run on electricity could be a boon to the ailing electrical grid.
A Scottish company develops artificial platelets that can cheaply and quickly plug leaks.
How will the next generation read and write?
Alternative semiconductors may be the key to shrinking microprocessors and improving performance.
Are drugs that seek to serve a specific population changing our concept of race?
Self-assembled nanotubes that conduct current when illuminated take us one step closer to cheap molecular photonic devices.
Material customized for NASCAR crash safety is now eyed as an impact absorber for carnage-prone spots on U.S. highways.
Ink-jet printers allow tissue engineers to control cell development and could one day be used to construct complex cellular structures.