The IAAF publishes rules for female athletes with high natural testosterone levels which could force two-time Olympic 800-meter champion Caster Semenya to stop running middle-distance races.

The Duke of Cambridge is returning the favour to his brother, who served as his best men when he married Kate Middleton at Westminster Abbey in 2011.

Japanese engineers have unveiled a robot that transforms into a car that can actually carry people on board. The 3.7-metre-tall two-seater robot "J-deite RIDE" can transform into a sportscar in a process that takes about a minute.

Michelle McNamara, a crime writer and the wife of comedian Patton Oswalt, spent years researching the serial killings before her death in 2016.

Donald Trump and Emmanuel Macron feigned plenty of mutual adoration during the French leader's state visit. But how long "le bromance" lasts is entirely up to the US President, writes Micki Maynard.