Yes, and in many ways. In one study, researchers found that people with more Facebook friends had more grey matter in several important brain regions, although this might be because people who start with larger brains attract more friends.
Some viruses attack the computer’s boot sector, the area on the hard drive that hosts the code for the start-up routine. Such a root code virus causes havoc because it runs itself every time you switch on the computer. Other viruses are hidden in emails, games or attached documents.
Yes, the new iPhone 5 will be out later this week, and yes, the Xbox One and PlayStation 4 will hit the shelves before Christmas. But that’s old news. Here’s our rundown of the most exciting gadgets arriving in 2014.