Chinese AI developer Moonshot is conducting an internal review after researchers were able to persuade two of its popular Kimi models to tell them how to make biological weapons and carry out assassinations. US President Donald Trump hosted a meeting of top technology bosses on Tuesday for what he called "an extraordinary gathering" of the minds that are "building America's Golden Age". South Korea's military has demanded an apology from North Korea for landmine blasts along their shared border that wounded South Korean soldiers earlier this month. South Africa's President Cyril Ramaphosa on Tuesday announced a clean-up of high-risk areas across the country, after the bodies of 12 women were discovered in an area east of Johannesburg in just two months. Six Flags Magic Mountain, an amusement park in California, has announced it will permanently close a popular rollercoaster after more than 100 riders alleged they suffered brain injuries.