With more than a billion active accounts worldwide, it is easy to forget that some people don't actually use Facebook.
Cornell University researchers have successfully simulated 25,000 generations of evolution in an effort to determine why biological networks tend to be organized as modules.
Wherever you are, whoever you are, the odds are that you wake up cheerful and get steadily more grumpy through the day - until the evening comes and you can kick back a bit.
Many online reviews appear too good to be true - and they are. Earlier this year, for example, the Federal Trade Commission fined a music tuition company $250,000 for posting fake reviews of its own products.