Can an AI chatbot of Dr Karl change climate sceptics' minds? He's willing to give it a try

There's arguably no face, voice or collection of exuberant, patterned shirts more recognisable than those belonging to Dr Karl Kruszelnicki. The bespectacled boffin has been answering curly listener questions about science, with characteristic excitement and passion, for more than 40 years. Despite a seemingly tireless work ethic, Kruszelnicki, now 77 years old, can't be everywhere all at once. Those questions now come in waves, across social media platforms at all hours of the day. "Sometimes I get 300 requests a day on Twitter to answer an involved question about climate change," Kruszelnicki says.