China: North Korea and trade will likely top the agenda when US President Donald Trump and Chinese President Xi Jinping sit down for formal talks. In a show of the importance China puts on Trump's first official visit, the welcoming ceremony outside Beijing's Great Hall of the People overlooking Tiananmen Square was broadcast live on state television - unprecedented treatment for a visiting leader. Trump and Xi hit it off at their first meeting in April at Trump's Mar-a-Lago resort in Florida and continued their "bromance" yesterday with an afternoon of sightseeing together with their wives. However, deep divisions persist over trade and North Korea. And while Xi is riding high after consolidating power at a twice-a-decade Communist Party Congress last month, Trump comes to China saddled with low public approval ratings and dogged by investigations into Russian links to his election campaign.
China: Dreamworld has defended two of its tiger handlers after video footage emerged of them hitting a big cat in the face and pulling its tail. The video was posted on Instagram yesterday, sparking angry posts about the handlers' "disgusting" behaviour. But Dreamworld says the handlers were using normal procedures to separate two tigers who were being aggressive and at risk of hurting each other by getting into a fight, and the audience was told that. "Akasha and Kai are both 100+kg animals and the intervention of our handlers prevented a situation that may have escalated," the theme park's general manager of life sciences Al Mucci said. World Animal Protection's Ben Pearson said: "The footage of a handler hitting a tiger at Dreamworld is a shocking insight into animal welfare practises at the venue".
Space: Death definitely becomes this star. Astronomers reported on a massive, distant star that exploded in 2014 - and also, apparently back in 1954. This is one supernova that refuses to bite the cosmic dust, confounding scientists who thought they knew how dying stars ticked. The oft-erupting star is 500 million light-years away in the direction of the Big Bear constellation. It was discovered in 2014 and, at the time, resembled your basic supernova that was getting fainter. But a few months later, astronomers at the California-based Las Cumbres Observatory saw it getting brighter. They've seen it grow faint, then bright, then faint again five times. They've even found past evidence of an explosion 60 years earlier at the same spot. The finding was published in the journal Nature.
Argentina: A prosecutor is formally declaring for the first time that the man probing Argentina's worst terror attack was murdered and didn't kill himself, a member of the prosecution team said. The opinion presented to a judge by prosecutor Eduardo Taiano reignites a case that shook Argentine politics with suspicions of high-level homicide in the 2015 death of crusading prosecutor Alberto Nisman. Judge Julian Ercolini will now decide whether to accept Taiano's conclusion and formally declare the case a murder investigation, rather than one of "suspicious death". Nisman's death came four days after he formally accused then-President Cristina Fernandez of covering up Iranian officials' role in a 1994 bombing that killed 85 people at a Jewish community centre in Buenos Aires. Nisman accused Fernandez and other senior officials of brokering the deal in exchange for favourable deals on oil and other goods from Iran. Fernandez has always insisted she had nothing to with a cover-up or with Nisman's death.
