Could an AI rewrite its own code? Has it perhaps already done so? Darren looks at the story which suggests that an AI Scientist, developed by Sakana AI, was able to change its own source code. What exactly happened and are you worried enough about it? Then Adam investigates the truth behind a viral claim that we say "hello" on the telephone because of Graham Bell's fiancée and assistant, Margaret Hello.

After having watched all six Sharknado films Adam decides to do some research into the science of these not at all ridiculous films, uncovering the truth about the plausibility and historical precedent for a tornado filled with living sharks. Darren gives us a book review of Renée DiResta's Invisible Rulers: The People Who Turn Lies into Reality, which explores how powerful influencers are able to affect what people believe.

Could meditation ever be harmful? Darren examines the evidence to determine if meditation, which can have many benefits, might sometimes have a negative impact on people's lives. Adam looks at the idea of cavemen and wonders if, as their name suggests, that they really spent all that much time in caves.

What's the difference between a bar of soap and the stuff we use to clean dishes, laundry and cars, and can you just use any of those in the shower? Adam tries to find out whether the stuff that's fit for baby ducks if good enough for you skin. Darren gives us a review of Determined: The Science of Life Without Free Will by Robert Sapolsky, which asks interesting questions about free will, whether we have it and what the implications are.

We look at some fundamental ways of cultivating critical thinking on the latest show. Darren looks at some common cognitive biases and logical fallacies and how to use these in order to have a better more accurate understanding of the truth of the things we face every day. Then Adam looks at the science behind the belief that you should let your leftovers cool down at room temperature before putting them in the fridge.

Can we say that AI is going in the wrong direction, as it does our art and writing while we suffer doing laundry and dishes? It's just Adam on the show this week as he overanalyzes a viral tweet by looking at how much the time and way we do chores has changed for the better over the centuries, while looking at what AI could do to improve the situation.

What were the first mammals like? Darren examines what characterizes a mammal and explores the world of early mammals, who coexisted with the dinosaurs. Adam investigates the discourse around a viral question which asks "Would you rather be stuck in a forest with a man or a bear?", using some simple statistics to inform the issue.

Could the huge Sandworms in Frank Herbert's Dune really exist? Adam looks at how scientifically plausible these odd creatures might be. In light of recent news about Open AI's GPT-4o and Google's Project Astra, Darren look at the latest advances in AI personal assistants, speculates where this could be leading and shares a passage from his book Uncontrollable on the topic.

Spencer Greenberg is the founder Clearer Thinking, a web site which provides tools for critical thinking, as well as Transparent Replications, which does rapid replications of papers in psychology and behavioural studies. In this interview he discusses the replication crisis in scientific studies, what's causing it and what can be done to reduce these problems.

This past Friday, April 19th, philosopher Daniel Dennett passed away at the age of 82. Throughout his life he has impacted many people through his work. On this week's show Darren shares some of his thoughts on this great man and gives an overview of a few of his books. Thank you Daniel Dennett.