Skip to main content

Why did the lemming cross the road?

Aww, cute. Apparently it's stuffed.
You might be surprised that some of the most entertaining press releases I get come from the Institute of Physics. I love them dearly, but just hearing the name 'Institute of Physics' you might think they're a bit po-faced. The reality is quite different, as reflected in the latest release, a doozy entitled Could lemmings be involved in regulating our climate?

According to a paper published in the IoP's Environmental Research Letters, the greening of the Arctic may not be down to global warming alone. Although lemmings eat grass and sedge, when they are present in an area these plants actually increase their hold. There are a number of suggestions why, but the important point is that a sudden burst of extra green cover isn't necessarily a sign of climate change if there are lemmings present.

I think this is quite fun, though they could have done better. The opening paragraph of the press release says:
The mention of lemmings usually evokes images of small rodents throwing themselves off the top of cliffs in acts of mass suicide; however, their reputations might no longer be determined by hearsay as a new report suggests they could be having an intricate effect on the Earth's climate.
There's a missed opportunity to point out that the throwing themselves off cliffs bit is generally considered to be an invention of a Walt Disney nature film where they were encouraged to do so to dramatic effect, rather than 'hearsay.'

You may be concerned that the story isn't about lemmings regulating the climate (I just love the idea of a horde of lemmings in a vast control room, pulling levers to control the Earth's climate) in some Gaia-like fashion. Rather it appears to be saying that a potential flag for climate change may be being corrupted by lemmings - but there is a section a bit later on that points out that if they increase the greenery they may be changing that area's ability to be a carbon sink, hence influencing climate change, though it's a bit tenuous.

Even so, I think we should pat the IoP on the back for the way lemmings have successfully drawn attention to what otherwise could have been a rather dull story.

P.S. Anyone else remember the computer game Lemmings? I loved it!


Photograph from Wikipedia

Comments

Popular posts from this blog

Why I hate opera

If I'm honest, the title of this post is an exaggeration to make a point. I don't really hate opera. There are a couple of operas - notably Monteverdi's Incoranazione di Poppea and Purcell's Dido & Aeneas - that I quite like. But what I do find truly sickening is the reverence with which opera is treated, as if it were some particularly great art form. Nowhere was this more obvious than in ITV's recent gut-wrenchingly awful series Pop Star to Opera Star , where the likes of Alan Tichmarsh treated the real opera singers as if they were fragile pieces on Antiques Roadshow, and the music as if it were a gift of the gods. In my opinion - and I know not everyone agrees - opera is: Mediocre music Melodramatic plots Amateurishly hammy acting A forced and unpleasant singing style Ridiculously over-supported by public funds I won't even bother to go into any detail on the plots and the acting - this is just self-evident. But the other aspects need some ex

Is 5x3 the same as 3x5?

The Internet has gone mildly bonkers over a child in America who was marked down in a test because when asked to work out 5x3 by repeated addition he/she used 5+5+5 instead of 3+3+3+3+3. Those who support the teacher say that 5x3 means 'five lots of 3' where the complainants say that 'times' is commutative (reversible) so the distinction is meaningless as 5x3 and 3x5 are indistinguishable. It's certainly true that not all mathematical operations are commutative. I think we are all comfortable that 5-3 is not the same as 3-5.  However. This not true of multiplication (of numbers). And so if there is to be any distinction, it has to be in the use of English to interpret the 'x' sign. Unfortunately, even here there is no logical way of coming up with a definitive answer. I suspect most primary school teachers would expands 'times' as 'lots of' as mentioned above. So we get 5 x 3 as '5 lots of 3'. Unfortunately that only wor

Which idiot came up with percentage-based gradient signs

Rant warning: the contents of this post could sound like something produced by UKIP. I wish to make it clear that I do not in any way support or endorse that political party. In fact it gives me the creeps. Once upon a time, the signs for a steep hill on British roads displayed the gradient in a simple, easy-to-understand form. If the hill went up, say, one yard for every three yards forward it said '1 in 3'. Then some bureaucrat came along and decided that it would be a good idea to state the slope as a percentage. So now the sign for (say) a 1 in 10 slope says 10% (I think). That 'I think' is because the percentage-based slope is so unnatural. There are two ways we conventionally measure slopes. Either on X/Y coordiates (as in 1 in 4) or using degrees - say at a 15° angle. We don't measure them in percentages. It's easy to visualize a 1 in 3 slope, or a 30 degree angle. Much less obvious what a 33.333 recurring percent slope is. And what's a 100% slope