England head into Thursday's day-night second Ashes Test against pink-ball masters Australia needing a rare victory at Brisbane's Gabba to get back into the five-match series.
When South Korea's leader declared martial law a year ago, one young woman blocked a tank, a civil servant resigned in protest and a lawmaker switched sides to remove him from office.
Some 600 experts began to work on Monday on the next major UN climate report, as the international consensus on global warming is challenged by US President Donald Trump, who deems the science a "hoax".
Australia's under-16 social media ban will make the nation a real-life laboratory on how best to tackle the technology's impact on young people, experts say.