Although most of us still use Internet Explorer, Mozilla Firefox and Opera provide excellent alternatives. Opera is well-designed, fast and, best of all, free. Once you get started with the browser, you won't want to go back to Internet Explorer and you're likely to install Opera across your various computers, at work and home. Fantastic, but how do you share your bookmarks across these computers?
oSync 0.7.1 is a Opera bookmarks synchronisation tool that will enable you to store a bookmark on your work PC and then automatically migrate the updated bookmarks to Opera, installed on your home PC. This is a seamless procedure so you don't need to do anything manually, everything is done in the background. If you're a Firefox user, there's an even better synchronisation tool from Google.
Some parts of Atacama have not received rainfall for 500 years - but a sudden deluge of water upset the Desert's delicate biological balance
Spitzer Space Telescope could not spot Oumuamua, suggesting that it is actually pretty small
Greenland crater one of the 25 largest impact craters on Earth
This long-sought progenitor star was identified in an image captured by Hubble in 2007