Could we soon get better drugs and faster computers thanks to research and production in space? Some companies are betting big on the idea of working in zero gravity. Here's how you can benefit.

TikTok and its Chinese parent company ByteDance have filed a petition with a US court, seeking to block a law that forces them to sell the social media app to a non-Chinese buyer or face a ban. They argue the legislation is unconstitutional, setting the stage for a historic legal battle. But first, China's President Xi Jinping has arrived in Serbia on the second leg of his European tour. He expects to receive a much warmer welcome than he did in France.

OpenAI will announce plans for a search engine powered by artificial intelligence on Monday May 13, Reuters reports. It's the latest challenge to search king Google and comes just one day before the tech giant's annual developer conference. On this week's Tech 24, Peter O'Brien looks at what might get Google sweating, amid changing search habits, a federal antitrust trial and smart new AI "answer engines".