Tokyo opens a new Olympic arena, which will host the venue for volleyball and wheelchair basketball events, as governor Yuriko Koike promises to implement "thorough measures" to protect people from the deadly coronavirus in the run-up to the games this summer.
Sky Brown is only 11 years old, but she already dreams of making her Olympic debut at the 2020 Tokyo Olympics. "People think that you're too young, you can't do it, and I want to show them that it doesn't matter about your size or your age," she says.
Olympic 800 metres champion Caster Semenya has accused the global athletics governing body of using her as a human guinea pig as it emerged that the IAAF had sought to have her declared a "biological male" in proceedings before sport's highest court.
Weighing just 9 kilogram, a four-legged robot 'cheetah' that can perform a 360-degree backflip from a standing position has been built by engineers from the Massachusetts Institute of Technology (MIT). The robot also has a range of motions that makes it agile and able to pick itself up if knocked to the ground.