The new user interface is designed to be faster, easier to use, and suited for a future with Firefox running on phones and tablets, too. As always, though, change means pain.
The open-source browser gets curvacious tabs, a pop-out panel that replaces the text menu, and more. Here's a look at some of the changes coming with the revamped Firefox.
Mozilla has been preparing a new look for Firefox, one that takes its cues from both mobile and touch screens, but it will be difficult to reverse course once implemented.
An underwater robot has been used to produce the first detailed, high-resolution 3D maps of Antarctic sea ice.
It looks like something from a '90s screensaver, but it's footage of the International Space Station flying through the northern (or maybe southern?) lights.
The Firefox overhaul applies the lessons of mobile design to Mozilla's desktop browser to unify its look across devices, a change more than two years in the making.
Mozilla's biggest browser remake since 2011, with a new interface and easier customization, begins to push away from the gate as Firefox 29 moves to beta.
Mozilla gears up for the biggest overhaul to Firefox in more than three years as it prepares Australis for all.
Revenue at the nonprofit group nearly doubled in 2012 thanks to a new deal with Google. The money, says executive chair Mitchell Baker, is funding a big push to bring Firefox to the mobile market.
An enormous coronal mass ejection has sent particles into space that are due to pass the Earth in the next three days.