Programmed life

Written by Khalil A. Cassimally


Continued from page 1

Longo’s research is mainly based onrepparttar observation of programmed aging in yeast. Scientists have used yeasts becauserepparttar 105814 molecular pathway that regulates its longevity is similar to other more complex organisms like mice and possibly humans.

The results of this research are surprising. Yeasts, which were studied died well before they were supposed to in order to provide nutrients for those yeasts within that same population which have acquired genetic mutations. In short, many millions of yeasts died early to suitrepparttar 105815 few better-adapted mutant yeasts. Can this process happen in humans as well?

“If aging is programmed in yeast andrepparttar 105816 latter’s molecular pathway is very similar to human’s, then isn’t it possible that humans also die earlier than they have to?” said Valter Longo.

Apart fromrepparttar 105817 possibility that we might have been wrong in sticking with Darwin’s all-too-known theory for so long-provided Longo’s theory is proven to be correct- gerontologists (scientists studyingrepparttar 105818 aging process) are now conjecturing that aging may actually be healed.

It seems easier to tweakrepparttar 105819 programming in a computer than to try to replace part after part in an old car that is steadily collapsing.

For Valter Longo, most organisms undergo programmed longevity. Is life therefore supposed to be programmed?

Khalil A.Cassimally is the editor in chief of Astronomy Journal and Astronomy Journal Ezine. He is also the co-founder of the RCPL Astronomy Club. He is currently Senior Columnist at BackWash.com and Columnist for bbc.co.uk h2g2 The Post where he writes 'Not Scientific Science' column.


Mosquitoes like my blood

Written by Khalil A. Cassimally


Continued from page 1
mosquitoes from detecting them. Another study, done earlier by Professor John Pickett and his team, showed thatrepparttar number of flies circulating around a herd depended on certain cows being present. Professor Pickett and his team discovered that unattractive – to mosquitoes at least - individuals gave out different chemical signals from other cows. To be sure about this fact,repparttar 105813 unattractive cows were removed andrepparttar 105814 number of flies botheringrepparttar 105815 herd did indeed increase. These ‘ordinary’ cows had not been camouflaged byrepparttar 105816 unattractive cows’ special ‘masking’ odour and thereforerepparttar 105817 flies were attracted torepparttar 105818 ‘ordinary’ cows.

After some other experiments, it was concluded thatrepparttar 105819 famous ‘masking’ odours were acting as repellents or as a cover up. This finding could lead to a new type of insect repellent. These would be both safer and more effective.

Next time you get bitten, just think thatrepparttar 105820 mosquitoes are not attracted by your ‘sweet’ blood but by your own odour.

Khalil A.Cassimally is the editor in chief of Astronomy Journal and Astronomy Journal Ezine. He is also the co-founder of the RCPL Astronomy Club. He is currently Senior Columnist at BackWash.com and Columnist for bbc.co.uk h2g2 The Post where he writes 'Not Scientific Science' column.


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