Dear Science: Medical quackery and new extreme temperatures

AUT Professor of Chemistry, Allan Blackman, is back for another week before Steve Pointing returns in February. Today on the show, Allan chats to Ximena about a tragic story of medical quackery in the UK, where a woman was conned into an expensive 'alkaline treatment' for her breast cancer. They also talk about new discoveries this week of extreme temperatures - astronomers have stumbled across hotter temperatures than were thought possible, while at the other end of the spectrum, the coldest temperature in the universe has been created in a lab.