Science & Technology

Facebook has a long history of upsetting its users by suddenly announcing a change to its privacy settings. In 2009, as a way to quiet the critics, Facebook set up a system for its customers to vote on changes. If enough of them were unhappy, the company would back down. Now, Facebook wants to get rid of the voting.

The Senate Judiciary Committee approved legislation to make old emails a little more private on Thursday. The legislation also applies to old Facebook posts, Google documents and anything else you might be hiding online behind a password.

Mercury is not the first planet to come to mind if you were searching for ice in the solar system. After all, the surface temperature across most of the planet is hot enough to melt lead.

But at the poles on Mercury it's a different story. Almost no sun reaches the poles, and as a result, temperatures can drop to less than -100 degrees Fahrenheit. Now, three papers in the journal Science suggest there really is ice at the bottom of craters near the poles on Mercury.

This is your brain making things up.

What you see isn't really there.

Salad producers haven't succeeded in banishing E. coli and other dangerous microbes from fresh greens, though they've tried hard. As we've reported before, it's a major challenge to both growers and the environment. But one scientist thinks he's making progress – with a spinach spa that zaps bad bugs with ultrasound.

Shaheen Dhada is an unlikely looking protagonist in the battle under way in India to protect free speech from government restrictions in the new media age.

Slight and soft-spoken, Dhada perches on the edge of her bed in a purple-walled room that has been her own for the past 20 years. Outside, police officers are posted for her protection in the town of Palghar, 2 1/2 hours outside Mumbai.