What money is all about and why a digital coin is much safer than a physical banknote
What the energy factories of the 19th century have in common with the digital cloud
Where we learn that computers get faster, smaller and cheaper since the 1960s, while other domains slowed down
What a frozen screen on your computer and a rocket explosion can teach us about software errors
Where we realise that all dictionaries have loops, and what this tells us about the cycles in graphs