Concerned about adverse social effects, the government is introducing strict limits on the amount of time (and money) spent gaming by young people. But just how will it know the age of an online gamer?

The Eye in the Sky program, a drone surveillance system developed in India and the UK, uses artificial intelligence to provide early warning of violent actions in large crowds. But there are concerns about privacy and abuse of the technology.

The Australian Communications and Media Authority will block illegal offshore gambling websites. It's part of an effort to counter the growing problem of unscrupulous and unlicensed operators which don't pay up if you win, charge hidden fees and are involved with credit card fraud.

The River Murray International Dark Sky Reserve in South Australia is a massive 3000 square kilometres in area and, with some of the darkest skies on the planet, is a star-gazers paradise. Only the 15th location to receive such status, viewers can feast their eyes on the centre of our Milky Way galaxy, which cannot be seen from the Northern Hemisphere.

If you lose 1 kg of body weight, where does it go? Physicist Dr Tony Heyes explains why the amount you eat is far more important to your weight than what you eat. With thanks to Ruben Meerman and Radio National's 'Ockham's Razor'.

John's comprehensive critique of the much-leaked new Pixel smart phone. It has an impressive camera, with great low-light capabilities, but disappoints in other key areas like battery life and the lack of integration of Face Unlock into tap and go payment. He was considering an upgrade from his Pixel 2 but is adamant it won't be to this iteration of Google's device.

An Australian ex-pat was forced to reveal passwords and give Customs officials access to his digital devices on arrival at Adelaide airport. His phone contained intimate material of his partner. The man claims this breach of his privacy has cost him his relationship and has vowed never to return to Australia.

Launched in 2004, Google's web-based mail service has over a billion users. Many are getting closer to using up their free 15GB of storage, partly due to sharing the trillion plus images taken each year, not to mention 4K videos. And many users don't want to lose their email addresses or the archived email messages they have, so they will start paying Google for extra storage. This will add billions of dollars to the tech behemoth's bulging coffers and draw users away from other cloud services.

Physicist Dr Tony Heyes tells how the Serbian polymath Milutin Milankovic, interned in Budapest during World War 1, studied long-term climate change on Earth and showed the profound influence of axial tilt and orbital precession. We also discuss how active geology enhances the chance of life developing on planets.

A French-Australian study finds the way your muscle groups work together is unique. Like your iris, fingerprints and voice, your gait is an example of the immutable exceptionalism that makes you you. This insight may one day help identify you at a border crossing, but could also help with designing better prostheses, physical therapy and robotics.