Grammy-nominated artist Akon is planning to build a futuristic city in Senegal and base its entire economy around a new cryptocurrency named after himself.
Instagram has said it now has more than one billion active users, less than a year after it reported reaching the 800 million mark.
The UK must "push the limits of innovative warfare" or risk being left behind amid a "darkening geopolitical picture", the new head of the British Army will warn during his first public speech in the role.
Donald Trump has ordered the Pentagon to create a US "space force", which he said would become the sixth branch of the American military.
A major upgrade to the Large Hadron Collider (LHC) is under way, with scientists hoping to produce four times more "God particles" a year and unlock further secrets about the universe's existence.