Sony launches new UHD TVs

UHD, HDR and Backlight Master Drive might sound like sci-fi terms – but they're actually the technologies that will make the next generation of TVs look intensely detailed and lush

Your money or your files: the growing threat of ransomware

Ransomware – whereby phishers lock data-access and blackmail the owners into paying for the key – is the new internet plague coming from the US. But since the criminals’ transactions are untraceable, what is the remedy? Seung Lee reports

How to manage menstruation with an app

Women hate prissiness about periods. A whole new lexicon is developing for that time of the month, along with apps to manage it. Chloë Hamilton wears her red badge with pride