You might think 1 second is not that much, but what about 1 million seconds? That would be 11 days. Not much at all if you come to think about it. But 1 billion seconds? That’s 33 years!
A human nail
We are all aware that our bodies are made of various stuff (mostly stardust). And we also know that human bodies contain iron. But do you know how much exactly? You could make a 3-inch nail with all the iron from a human body!
