In Sleek Geeks, ‘Dr Karl’ Kruszelnicki and Adam Spencer ‘mix science with humour as they answer some of the perplexing scientific mysteries we encounter on a daily basis’. The podcast is a relentlessly nerdy – but don’t get us wrong, very entertaining – chat-driven science-fuelled whirlwind where, in the words of the hosts, you’re likely to ‘learn something without even noticing’.