The same researchers previously mapped racist Tweets about President Obama. In both cases there's reason to be a little skeptical.
The best of the rest from the Physics arXiv preprint server
We've hit 400 ppm of carbon dioxide, but we won't know what that means for decades.
Researchers attach "viral hitmen" to surfaces to demonstrate a possible antibacterial defense for catheters and other medical devices.
In new study, Facebook's science team says the company killed automatic sharing on "Offers" because the science said active sharing works better.
A startup believes people will want a photographic record of their lives, taken at 30-second intervals.
A clip-on camera that snaps a picture every 30 seconds.
A month after the release of Home, Facebook is working to answer criticisms with improvements.
An examination of simple cell-phone records reveals maps of poverty levels, ethnic divides, and the movements of sports fans.
Enhancing the flow of information through the brain could be crucial to making neuroprosthetics practical.