science – Page 4

Best Conspiracy Theory Ever

This has to be the best conspiracy theory I’ve ever read: this guy believes that the Galileo space probe that NASA crashed into Jupiter in 2003 (to avoid it being left in an unstable orbit and potentially crashing into Europa, which could affect the scientific value of the moon) is starting a nuclear reaction that will eventually turn Jupiter into a second sun, and that the reason NASA are no longer doing much active research on the Shoemaker/Levy 9 “black spot” impact (widely understood to be a comet impact) on Jupiter is because they don’t want to attract attention to what is actually the end of the solar system (he believes it’s the beginnings of a nuclear explosion) as we know it, caused by them.

Personally, I find it hard to believe that humans are making a significant impact on climate change on Earth, but this guy thinks that a single plutonium-238 core (not even a reactor, and not even the same kind of plutonium as is used in atomic bombs) dropped into Jupiter could cause a chain reaction that would suddenly make this into a binary system.

Update: within two years of writing this post my position had shifted and I clearly accept the scientific consensus of human impact on climate change. At the time, I didn’t have a full comprehension of the research and it didn’t “smell right”, so I was skeptical (although I didn’t ever dismiss it as wrong, just state that I was unconvinced). I credit several causes in the change in my belief, including Statto (with whom I had a lively debate both in the comments to this post and elsewhere). This, in turn, I occasionally use as evidence against the oft-made assertion that “nobody ever changed anybody’s mind by arguing on the Internet”! It’s also worth noting that I never doubted the fact of climate change and that humans needed to do something in response to it, only that humans caused it; obviously I was still wrong – sorry! – but at least I wasn’t wrong-and-in-a-position-of-authority.

It’s entertaining reading, though. I’m looking forward to Jimmy passing comment on it, soon.

Oh, and it’s Crystal Maze night tonight (The Cottage, 7pm) for anybody still around. We’ve only got two episodes of Series 2 left, so if we run out we may have to fall back on some Wiigaming or something.

Orgasms And Biochemistry

Just read a great article on brain activity during sexual stimulation and specifically upon orgasm: scanning people’s brains while they’re engaged in sexual activity with their partners has lead to some fascinating results. From the article:

In men, greater activity was seen in the insula, which deals with emotion, and particularly in the secondary somatosensory cortex, which rates the significance of physical sensations. This suggests that the sensory input coming from the genitals is being judged highly important and pleasurable by the brain.

Women, however, show very little increased brain activity, and only in the primary somatosensory cortex – which registers purely that a sensation in the genitals is there.”In women the primary feeling is there, but not the marker that this is seen as a big deal,” Dr Holstege said.”For males, touch itself is all-important. For females, it is not so important.”

I fascination turned to amusement when I read about some of the difficulties the participants had under experimental conditions, though:

The experiments also revealed a rather surprising effect: both men and women found it easier to have an orgasm when they kept their socks on. Draughts in the scanning room left couples complaining of “literally cold feet”, and providing a pair of socks allowed 80 per cent rather than 50 per cent to reach a climax while their brains were scanned.

Science Graduates Earn More, Live Longer, Smoke Less

This report by the BBC, published yesterday, gives evidence that we science/engineering graduates live longer than our artsy opposite numbers. Made my day.