Rubbish isn't always waste. Sometimes it can be really useful. Find out more in this rubbish episode.

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From days of the week to 'Things' in long houses, the Vikings wandered the world, and left their mark, their art and their language everywhere they went.

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This time it's life on two wheels as Simon and Bruce investigate the history and tragedy (sorry, MAMILs) and the general story of the bicycle. From its bone-shaking beginnings to the oddest tandem, you'll discover much more about the bike than you ever wanted to know!

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Glue has been used for so long for so much that it's become integral to our lives from top (hair products) to toe (shoe soles) and beyond.

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This time we discuss how pretty paper can be. Whether it's folded, cut, curled, or mashed, paper is immensely versatile. Come in and listen to a little 'Silhouetta' of two men!

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In this longer-than-usual episode, you'll learn how obsessed the world has become with taking images, where it all started, and how many pictures it takes to capture a nuclear explosion.

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This week, it's footwear. We find out how clogs messed up machinery and learn to tell our right foot from our left.

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This week, Simon and Bruce check out the future - or at least the various ways of predicting it. From the Soothsayers to the Simpsons, there are so many ways of knowing what's to come. Think of a number between 1 and 10. And, the number you thought of was... 7. Spooky.

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Flags. You probably see at least one every day. But where do they come from? What do they mean? And why do flagpoles sometimes wear cravats? All this and more this week on Factoraly. Check out the show notes on the blog at Factoraly.com, comment on Facebook, or better yet, give this episode and all of Factoraly a five-star review in your podcast player!

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Another subject that just gets bigger and bigger - a bit like a tree, really. Trees have always been, and continue to be, one of the most important organisms in the life of humans. And yet, we take them for granted most of the time. This episode highlights just how vital (literally) trees are to us.

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