This simple bumper-mounted laser promises to help remedy that by shining a bright red line on the road, 15 to 20 feet behind your vehicle, giving other drivers advance warning that you're ahead of them.
In this recent image from space-based telescope Hubble, we see something extraordinary. The moons Europa, Callisto, and Io transit the planet Jupiter, casting shadows on its roiling clouds. Read More >>
The man who built the free email encryption software used by Edward Snowden, as well as hundreds of thousands of journalists, dissidents and security-minded people around the world, is running out of money to keep his project alive.