What are superfoods, how many tastebuds do we have on our tongue and how antioxidants can help add muscle after exercise. This and more about gold in your body and poisonous levels of banana consumption.

They love it, answering questions that is. In this episode Dr Karl and Adam Spencer zip their way through the latest batch of audience quesitons via Twitter. They also manage to head off on a shameless book promotion tangent to chat about their new releases. Dr Karl’s new book, is Short Back and Science, and Adam Spencer’s World of Numbers is modestly titled.

Dr Karl and Adam Spencer are back together in a new series of podcasts. They catch up for a chat, and exchange early xmas gifts, a copy of each others latest book. Funny that. Dr Karl’s new book, Short Back and Science is a grab bag of science topics that have caught his eye over the last year. Adam Spencer’s World of Numbers, is a book of numerical trivia a sort of excursion into the beautiful world of mathematics.

With Dr Karl and Adam both out of town, we asked geek by association, Dan Ilic, to interview Derek Veritasium Muller on behalf of leek Geeks. Derek speaks about his PhD, his YouTube success, and his most recent documentary series Uranium.

With Dr Karl and Adam both out of town, we asked geek by association, Dan Ilic, to interview Dr Neil deGrasse Tyson on behalf of Sleek Geeks. Via Twitter Time, Adam asks what Dr Tyson’s favourite prime number is, whilst Dr Karl wants to know what effect his yellow jeans and loud shirts are having on the universe.

Commander Chris Hadfield has flown test fighters, run the International Space Station and recorded a cover of David Bowie's Space Oddity that has received over 1.5 million YouTube views. But what will he make of Adam's attempt to speak Russian based on a translation he's reading off his iPhone. All of this and more in the special Sleek Geeks chat with one of the world's most in demand scientists.

A MicroMort is a unit of measurement related to risk. If an activity exposes you to one MicroMort, then you have a one-in-a-million chance of sudden death while engaged in that activity. The very earliest customer-complaint letter goes back some 3,750 years and, why does raisin toast always burn when regular toast doesn’t?

Does sunlight kill odours? Will the dog’s bed smell fresher by leaving it in the sun? Do mobile phones cause cancer? In what order did human senses evolve, and are there more senses on the way? And, Dr Karl and Adam’s ManWashing tips are back

Dr Karl's iPhone 6+ has caused him to carry a man bag because it won’t fit in bright blue stretch jeans. Adam on the other hand will happily accept any colour iPhone 6 that Apple send his way. Also, just how can a computer hacker access your tyres to kill you?

Dr Karl and Adam try to get through a series of Twitter questions from their listeners, but what unfolds is everything but that. Topics they blast through include … Galois, Fermat Primes, fear of numbers, Pat Rafter, Big Data and space elevators.