Science, Cows and Serendipity
This is from BBC but I first heard this story on National Public Radio.
Scientists at the University of Duisburg-Essen were studying naked mole rats and discovered that when they build a nest, the sleeping areas are always south. They wondered if humans also had an unconscious magnetic sensitivity and decided to use GoogleEarth to study how campers set up their tents around the world, but found that it was too difficult to see tents, but they could see cows really well. Since they could see cows, they decided to survey the cows and discovered that MOST of the time, cows face either north or south. Who knew?
Cattle shown to align north-south
By Elizabeth Mitchell
Science reporter, BBC News
Have you ever noticed that herds of grazing animals all face the same way?
Images from Google Earth have confirmed that cattle tend to align their bodies in a north-south direction.
Wild deer also display this behaviour – a phenomenon that has apparently gone unnoticed by herdsmen and hunters for thousands of years.
In the Proceedings for the National Academy of Sciences, scientists say the Earth’s magnetic fields may influence the behaviour of these animals.
The Earth can be viewed as a huge magnet, with magnetic north and south situated close to the geographical poles.
Many species – including birds and salmon – are known to use the Earth’s magnetic fields in migration, rather like a natural GPS.
A few studies have shown that some mammals – including bats – also use a “magnetic compass” to help their sense of direction.
Dr Sabine Begall, from the University of Duisburg-Essen, Germany, has mainly studied the magnetic sense of mole rats – African animals that live in underground tunnels.
“We were wondering if larger animals also have this magnetic sense,” she told BBC News.
I don’t know why, but random discoveries like this fascinate me. If you want to read more, you can do so here, at BBC News or here at National Public Radio.
Dont’cha just love these scientists? They figure out things just because they are curious!
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Interesting!
I wish they could’ve figured out if humans did the same thing 🙂
Interesting…wow…
Fascinating
Aurous – I think it is a hoot that they studied the cows because cows are what they could see!
Amu – It’s probably a good thing they can’t study us . . . Yet!
Jewaira – Isn’t it?
Amazing! I just heard this on the radio 2 days ago too! (On 100.05 fm)
Isn’t that BBC? BBC and National Public radio are kind of the same, only one is British and one is American. . . I totally love the story!
Yeah its BBC World Service I believe 🙂 I just discovered the station a few days ago and I’m hooked!