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02 Oct 2012
If being gay is genetic but gay sex doesn't produce children, why don't those genes die out?
gays
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science
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biology
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10 Aug 2012
Ewww! Seems like nature assumes girls are sluts, or fellas are rapists, or both. I thought the mushroom head was to stop it popping out easily. Or is that just my sloppy hooha?
biology
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sex
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02 Jun 2012
This picture from The New England Journal of Medicine has been lighting up the internet for the past few days. This 69 year old man drove a delivery truck for 28 years and this is the aging result of sun damage on one side, because the sun's UVA rays pass through glass.
Wear sunscreen kids!
science
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biology
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4
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10 Feb 2012
And if you need persuading, look at what really hapens when you don't exercise. These scans are cross sections of the legs (quadriceps) of a 40 year old athlete, a 74 year old athlete, and a 74 year old who takes no exercise. As you can see, there is very little difference in muscle tissue and fat between the two athletes, while the muscle tissue of the sedentary 74 yr old has wasted dramatically. Scary.
If you're of a medical bent you can read the full study HERE.
I'm off to the gym!
(via The World's Best Ever)
biology
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sport
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medicine
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science
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13 Jan 2012
... that you're using to read this? It's actually mind-boggling amazing.
Watching this TED talk will make you amazed at the incredibly complex, intricate and magical stuff that goes on in your body at the molecular level. Though it'll also gave me the fear because it just seems incredible that it doesn't regularly all go haywire and turn you in to a quivering lump of mush.
(thanks Nigel)
science
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biology
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2
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20 Sep 2010
(thanks Brendan)
science
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biology
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gays
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2
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09 Jun 2010
Dr Kevin Mitchell investigates developmental neurognetics at the Smurfit Institute of Genetics at Trinity College, and he has an interesting blog post on the research into the genetic effects on sexual orientation.
This assumption reflects a common idea that heterosexuality represents the same default state in both males and females - that it is the "normal", baseline condition, one that requires no active processes. In fact, there is not a single rule: "be attracted to members of the opposite sex" - there are two rules: either be attracted to males or be attracted to females. These "rules" are embodied in anatomical and physiological differences in neural circuitry controlling sexual desire and behaviour, which differ between heterosexual males and females. Understanding that both these behavioural rules require active and possibly distinct neurodevelopmental processes to establish makes it much easier to appreciate how alterations to those processes can lead to exceptions to how those rules are expressed.
Read the rest.
(thanks Graham)
science
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ideas
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biology
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homosexuality
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nerd break
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1
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07 May 2010
The Guardian gets to grips with dicks.
(thanks Leah)
science
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biology
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2
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02 Mar 2010
Take four fibre-optic cameras, shove them up the noses and down the throats of a singing quartet till you can see their vocal chords, and record.
music
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biology
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short film
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06 Aug 2009
I saw a David Attenborough documentary exploring whether our bipedalism might have evolved from apes that lived in swampland where wading on two feet was necessary. It showed fascinating footage of apes doing just that and looking incredibly 'human'. I can't find the footage on-line, but this TED talk from Welsh feminist and science writer Elaine Morgan, a strong proponnt of the Aquatic Ape Theory, is interesting.
If you're interested, you can see the 1998 BBC series, "Water Babies - The Aquatic Ape" on YouTube HERE.
science
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biology
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people
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