Why are there concerns AI could threaten humanity, and how real are they?

Why are there concerns AI could threaten humanity, and how real are they? Image caption, Calls for AI regulation are growing as concerned researchers and bosses issue disconcerting warnings about the tech's potential In recent weeks, warnings about potential dangers of AI have spurred calls for coordinated action to slow the technology's development. Claims by current and former researchers that the tech will endanger humanity - with one suggesting there is a greater than 10% chance of it killing all humans - have raised alarm bells. Major developers OpenAI and Anthropic have urged lawmakers to regulate it, though some perhaps cynically suggest this move aims to cement their dominance over rivals. Regardless, the high profile claims have caused concern.