How the zebra got its stripes

Have you ever noticed how regular nature can be; that there are patterns hidden everywhere? Sea shells have a nice spiral pattern, trees show subtle fractal patterns, and some plants have their petals arranged in a very specific way. But some patterns are a lot more obvious. Take the zebra for example, the black-and-white striped cousin of the horse. Continue reading

Advertisements

CSI: The Atmosphere

Crime committed

Holes have been punched in our Ozone layer; a layer of highly concentrated O3 in the Earth’s stratosphere.

Time of crime committed

Holes were first detected in 1974 and their size has been increasing ever since.

Names of those involved

Thomas Midgley Jr.: scientist and inventor of Chlorofluorocarbon (CFC) synthesis in the1920’s. Continue reading

The next war will be fought over water

Did you brush your teeth this morning? Did you flush the loo? Did you have breakfast? I’m going to assume you did all these things and a lot more. If not, then I hope for your sake and those around you, that you’re still in bed. But did you think about the water you used when doing them?

What role will science and technology have in the distribution of water?

What role will science and technology have in the distribution of water?

If you’ve got an old loo, one without a dual flush, you could be using 13 litres of water with every flush. That’s a lot of water. We’re lucky in the UK to have an almost continuous supply every day of our lives. In some developing countries, the average water supply per person is less than 20 litres, and you just flushed half that amount down the toilet. Continue reading