The bad news out of South Africa this week is the outbreak
of xenophobic violence in some parts of the country. Based on the age-old principle that if something
is going badly for you it must be someone else’s fault, foreigners – almost exclusively
black people from elsewhere in Africa – must be the cause of the slowing economy and
lack of jobs. In the words of Pete Seeger’s
song, when will they ever learn?
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| Angola minefield. Looks harmless? |
But just for a change I want to report on a good news story from
Africa. Land mines. Well, the land mines themselves are not a good news story,
quite the opposite. When Portugal
decided more or less overnight to pull out of its African colonies of Angola
and Mozambique, it left a power vacuum that soon became a battleground for control between
competing “liberation” movements, often with the backing of outside powers
playing their own dirty games. Among
other things, this led to minefields of horrendous proportions, particularly in
Angola. Although the war there ended in
2002, most of the mines remain and they remain active.
Often they surround towns that are expanding and need more land for
crop growing. The results are inevitable
and often horrific.
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| High tech mine detector |
Clearing the mines is a painstaking and dangerous business.
It involves using metal detectors to clear paths and then to work outwards from
safe ground. Multiple false alarms bring the process to a halt until the cause can be definitely identified. Various more remote
technologies have been tried, including the remote detection of the chemical signatures of the decomposition
products of the explosives. The success
rate is quite good, but would you be willing to accept “quite good” if you were
walking in the area? And these
technologies are not cheap.
Dogs have been tried in the past, but there are problems,
not the least of which is that they can set off the mines.
Enter the hero of our story, the Gambian
Pouched Rat.
It has always seemed to me that the rat has had a very bad
rap. They are smart, successful in a
wide variety of environments, and tend to clean up after us. Of course, they can transmit diseases, but no
one’s perfect. And they are said to make
excellent and affectionate pets.
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| A hero rat on the job |
But these are working rats.
They have an extremely sensitive sense of smell, and can be trained to
pick up the scents arising from buried land mines without difficulty. Best of all, they are too light to set off
the mines, and they run on guide wires that ensure that their handlers can follow them
safely and investigate their discoveries.
They have a much lower false alarm rate than metal detectors; the
process of clearing an area can proceed more quickly and efficiently. Because they are doing such a great job, they
have become known as the Hero Rats. You
can see them in action in a recent New York Times video HERE. And if you want to know more about them, and
even maybe to “adopt” one (the rats accept Visa and Mastercard), take a look at the Apopo site HERE.
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| Did I mention their great whiskers? |
It’s a good news story from Africa – rats to the
rescue! Now if we could persuade rats to
generate electricity, we might be in with a real chance!
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| As one Nose to another... |
Michael – Thursday.
