| Science: Physics: Speed of light |
[Jul. 1st, 2004|07:51 am] |
Speed of light may have changed recently
The speed of light, one of the most sacrosanct of the universal physical constants, may have been lower as recently as two billion years ago - and not in some far corner of the universe, but right here on Earth.
( Read more... ) |
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| Science: Nanotech: Silicon wiring |
[Jul. 1st, 2004|07:53 am] |
Hybrid nano-wires provide link to silicon
Nanoscale electronic components that could be plugged into conventional computer circuits have been developed for the first time by US chemists.
Nanoscopic electronic wires have already been made in the laboratory, often using exotic materials such as carbon nanotubes. However, to be of practical use, such components will need to be connected to larger electronic components. And existing electronics are usually made with silicon, which cannot easily be connected to nanotubes.
( Read more... ) |
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| Biology: Human reproduction: Ovaries translplant |
[Jul. 1st, 2004|07:57 am] |
First pregnancy from frozen ovaries
For the first time a woman has become pregnant after having thin slices of her ovaries removed and frozen during cancer treatment, and then re-implanted.
The woman became pregnant naturally, by having sex. Other research teams have tried IVF with eggs taken from such patients, but no pregnancy has yet resulted.
( Read more... ) |
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| Sociobiology: Primates intelligence |
[Jul. 1st, 2004|08:00 am] |
Sneakiest primates have biggest brains
Monkeys and apes who are good at deceiving their peers also have the biggest brains relative to their body size. The finding backs the "Machiavellian intelligence" theory, which suggests the benefits of complex social skills fuelled the evolution of large primate brains.
( Read more... ) |
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| Human Biology: Puberty: TV influence |
[Jul. 1st, 2004|08:04 am] |
Television watching may hasten puberty
Children who watch a lot of television produce less melatonin, new research suggests - the "sleep hormone" has been linked to timing of puberty.
Scientists at the University of Florence in Italy found that when youngsters were deprived of their TV sets, computers and video games, their melatonin production increased by an average 30 per cent.
( Read more... )
ES: watching TV also worsens the negative effects of the jetlag. Could be for the same reason. |
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