The social network reports fourth-quarter profits of $701m, a 34% increase from the same period a year earlier, buoyed by strong mobile advertising sales.
The chief of Microsoft's research division says he does not believe artificial intelligence systems are going to wipe out humankind.
A computer programmer creates a computer chess program that takes up only 487 bytes of data, breaking a 33-year-old record.
Why can't we let go of our old tech?
How to build the world's tallest lift
Africa's "solar-preneurs" bring light to the unconnected
How Rory thinks gadgets will change news forever
Apps threaten deaf social clubs
Disrupted services from Facebook, Instagram and other social networks were the result of system error, not hackers.
Facebook suffers widespread fault
TalkTalk forces porn filter choice
Should schools gorge on gadgets?
Emergency patch fixes Flash flaw
Reporter jailed for stolen data links