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5kg shown on the dial of a scale.

Encyclopaedia corner: black holes and kilograms

... And then from those measuring companies would make their own standards. And that's how they'd calibrate weighing ... iridium, because that doesn't rust and won't change on its own. Phil - Now scientists, I know, love to be precise. Adam ... the kilogram on eBay. Wouldn't that be fun? Adam - Yeah. I own the kilogram. Deal with it. Phil - That's fantastic. Adam ...

Giles Yeo's gut

Getting quizzical and spilling guts in the studio...

... one of their stomachs is for holding food for their own consumption, whilst the second one is to hold food to be ... TIE BREAK To the nearest 10, how many multiples of their own body weight can a dung beetle move at one time? Chris - ... compared to body weight. They can pull 1,141 times their own body weight. Chris - They follow the stars to work out ...