Australian scientists have restored the sight of three human test subjects using stem cells cultured in contact lenses. All the patients were blind in only one eye.

Two were legally blind, but can now read the big letters on an eye chart. The third could read the first few lines, but is now able to pass a driver’s test. The University of New South Wales reports that these patients all had damaged corneas, and the stem cells came from each person’s good eye. The best part: the procedure is inexpensive, raising hopes for being able to push this to the third world sooner than other, more expensive medications.

Yahoo Inc. has sued the NFL Players Association, claiming it shouldn’t have to pay royalties to use players’ statistics, photos and other data in its popular online fantasy football game because the information is already publicly available.

Santa Clara, Calif.-based Yahoo filed its lawsuit Monday in federal court in Minneapolis.

According to the complaint, a licensing arm of the players union has threatened to sue Yahoo if it doesn’t pay for the information. The last of Yahoo’s licensing agreements with NFL Players Inc. expired March 1. But Yahoo claims it doesn’t need authorization, due to a court decision in April in a similar dispute between NFL Players Inc. and CBS Interactive Inc.

Fantasy sports league participants create teams comprised of real players. As the season progresses, participants’ track their players’ statistics to judge how well their team is performing. According to the judge’s decision in the CBS Interactive case, an estimated 13 million to 15 million people participate in fantasy football games that gross more than $1 billion a year.

Yahoo’s lawsuit wants the court to declare that its game does not violate any rights of publicity owned or controlled by NFL Players Inc., and that any such rights would be trumped by the First Amendment and federal copyright law anyway. It also seeks to bar NFL Players Inc. from interfering with Yahoo’s fantasy sports businesses, from threatening litigation, or making any statements that Yahoo or its customers are infringing the rights of NFL Players Inc.

A new Web site unveiled Thursday will track policies imposed by popular Internet sites such as Facebook and Google, hoping to help users spot potentially harmful changes.

TOSBack.org, the brainchild of privacy advocacy group Electronic Frontier Foundation, will track terms of service modifications within hours of an update.

The site will compare old and new policies side by side and highlight changes. With about two dozen sites covered already, TOSBack.org plans to add more agreements, from credit card, bank, cable TV and other companies.

Tim Jones, the EFF’s activism and technology manager, hopes the site will help avoid debacles such as the one faced by Facebook in February.