Google Inc. is offering a more wide-ranging view of the Moon, 40 years after humans first landed there.

To commemorate Monday’s anniversary of the Apollo 11 crew’s first steps on the lunar surface, Google Earth is adding a guided moon tour with astronauts Buzz Aldrin and Jack Schmitt, who was a pilot on the later Apollo 17 mission.

The free software also offers panoramic images shot by the Apollo astronauts, new video footage and other features.

The new features are available with the Google Earth 5.0 download.

Some images already have been available through Google’s online mapping service at http://moon.google.com .

In August, Netgear Inc. plans to introduce a $190 router that will provide the first easy way for users to get a grip on their Internet traffic.

Netgear said it will include the feature on future models, eventually making it a standard, and provide software upgrades for older devices.

Most Internet service providers set a limit for how much their subscribers are allowed to download each month. Those limits are mostly set high - it’s 250 gigabytes per month at Comcast Corp. But some ISPs, led by Time Warner Cable Inc., have tried to set low limits, then charge extra for each gigabyte of data beyond the cap.

That has met with a lot of opposition, not least because most consumers have no idea how many gigabytes they consume each month. In April, Time Warner said it was postponing plans to expand a trial of metered billing beyond Beaumont, Texas, where it continues.

Time Warner Cable tried to educate its users by giving them a Web page where they could track their consumption. Netgear’s routers will give owners a way to monitor their usage independently. The users can read the data in their Web browsers and could get customized alerts at certain levels.

Barnes & Noble Inc. on Monday stepped up its fight in the small but highly competitive market for electronic books with the launch of a new e-bookstore offering titles to be read on a variety of devices.

Barnes & Noble will sell books that shoppers can read on the iPhone, iTouch, BlackBerry and most personal computers, whereas competitors have sold devices designed solely for reading electronic books, such as Amazon.com’s Kindle or Sony Corp.’s Sony Reader.

New York-based Barnes & Noble said it also will be the exclusive provider of books for a reader from Mountain View, Calif.-based Plastic Logic, which expects to release it in 2010. And the company expects to make more devices compatible in the coming months.

Yahoo Inc. is sprucing up its Web site’s home page with a long-promised makeover that is supposed to make it easier to see what’s happening at the Internet’s other hot spots.

The revamped home page, scheduled to debut Tuesday in the United States, is part of an overhaul aimed at recapturing some of the buzz that Yahoo has lost to increasingly popular online hangouts like Facebook, MySpace and Twitter.

Even as Yahoo’s star has faded, its Web site has remained among the Internet’s busiest. More than 570 million people worldwide came to Yahoo in May, according to the most recent data available from online research firm comScore Inc.

The retooled page will be introduced in the United Kingdom, India and France later this week. It will roll out to the rest of the world during the next year, with the option to retain the old design starting to phase out this fall.