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The Last Word weekly top questions – 3 September 2010

 

Welcome to this Friday's round-up of the week's top questions.

 

We started off the week with a topical question. alexa_brock_82 wanted to know why, if the Chilean miners are trapped 700 metres underground, will it take months to free them. She suggested you could drill to that depth in less than a month. Find out what Last Worders had to say on the limiting logistics of the rescue attempt here: http://bit.ly/bihGDX?

 

My particular favourite this week was Asxz's intriguing question about sending computer images straight to the brain, bypassing the eyes. Read my musings and those of other Last Worders here: http://bit.ly/9bGwWv?

 

This week's unsolved mystery is the reason for BlueBasilisk's fish changing colour after they were transferred from an outdoor pond to an indoor tank. The once brown fish turned pale gold, much to BlueBasilisk's bemusement. Have you seen the same thing? Can you explain it? Visit the Last Word and tell us what you think: http://bit.ly/aArgbt?

 

Today's question comes from Lana, who wonders why really hot things can sometimes feel cold. Is it your skin getting confused? At what temperature does it happen? Pipe up and tell us your thoughts here: http://bit.ly/dczKFF

 

Have a great weekend,

 

Kat

 

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Harrison says:

In answer to the photograph of the lined up caterpillars in issue 31st July, the caterpillars are the pine processionary moth caterpillar, thaumetopoea pityocampa. We see them in abundance in the pine forests during spring where we live in the Spanish pre-Pyrenees. The moth is silver grey and insignificant. However the caterpillars can be dangerous to young children and dogs. If hairs on the caterpillar are touched they can cause anaphylactic shock. With adults they can cause a severe painful rash for three weeks. During spring you can see their `nests` in the pine trees which seem to be made out of a cobweb like material. If the nests are abundant, the pine tree suffers but never enough to kill it. The hallmark of a successful parasite.                

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posted on 2010-09-05 07:47:55 | Report abuse

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mugwump says:

Further to the earlier comprehensive reply: I lived for a few years in north west France and the first spring there we saw this intriguing phenomenon.  Research revealed that in more southerly countries, these caterpillars are regarded as a pest, and the local authorities will remove their nests.  As we had a guest house, we needed to limit these nasty caterpillars.  Our pine trees were their preferred nesting places - I always thought that their nests looked like cotton wool buds on the ends of the branches.  We wrapped the trunks with sticky bandages and burned off the nests with garden torches.  Luckily, we were not troubled with them again in the garden.

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posted on 2010-11-01 21:43:21 | Report abuse


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