The Ultimate Pizza Quiz

Jenga may sound like a made up word, but it's not! It actually comes from the Swahili word 'kujenga' which means 'to build'! The name was chosen because the game has its origins in Africa and because the whole point of the game is to continue building an ever more precarious tower from wooden blocks.

It’s fascinating that the largest animal ever to have lived on earth, the blue whale, feeds on nothing but krill, shrimp-like creatures that are among the smallest sea-dwellers. But it takes 36 metric tons of krill a day to allay an adult blue whale’s hunger. That’s the weight of 25 cars!

The smallest sample that can be clearly observed under a light microscope is a 500 nanometer long object. It is possible to observe smaller objects than this, but their features might be distorted. Anything smaller than 500 nanometers loses detail because of the wave nature of light.