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| Craig Venter: A voyage of DNA, genes and the sea |
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http://www.ted.com Genomics pioneer Craig
Venter takes a break from his epic
round-the-world expedition to talk about the
millions of genes his team has discovered so
far, in their quest to map the ocean's hidden
biodiversity. (Quite a task, when you
consider that there are tens of millions of
microbes in a single drop of sea water.) He
updates the TED audience on his discoveries,
from the 2,000 photoreceptor genes found in
the Sargasso Sea to the thrill of being under
house arrest in French waters. After touching
on the potential of environmental genomics to
monitor the safety of air, water and offshore
drilling, Venter ends with his vision for
engineered species that can replace the
petrochemical industry by creating clean
energy.
Tags : TED TEDTalks microbes biology genomics |
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Affichage : 16036
Durée : 1122 s |
| Evolution BT Corn Genes and Bug Genes |
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http://www.myspace.com/acorvettes
Splice the genes for a naturally pest-killing
microbe into a crop plant so that the corn or
wheat or potato plants themselves become
lethal to the pests. No more wasteful -- and
expensive -- spraying of toxic pesticides.
Instead, the bugs taste the leaves and go off
to die.
Indisputably, it works. The genes of Bacillus
thuringiensis, or Bt, have been added to
corn, cotton, potatoes, and other crops, with
the desired results. Scientists are aware,
however, that any effort to manipulate the
ecological balance must reckon with the
evolutionary consequences. So even before the
first Bt crops were planted, scientists,
farmers, and regulators began worrying about
unintended effects.
Tags : Evolution BT Corn genes science biology creationism ID Transitional fossils kenn hamm kent hovind AIG |
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Affichage : 4309
Durée : 322 s |
| NOVA | Ghost In Your Genes | Preview | PBS |
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Scientists have long puzzled over the
different fates of identical twins: both have
the same genes, yet only one may develop a
serious disease like cancer or autism. What's
going on?
Does some biological force beyond genes
determine who we are? On October 16, NOVA's
"Ghost In Your Genes" traces the clues that
have led scientists to a new picture of
genetic control and expression called
epigenetics.
Catch the preview here first.
For more information, visit
http://www.pbs.org/wgbh/nova/genes/
Tags : NOVA science twins cancer autism genetics epigenetics PBS |
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Affichage : 8947
Durée : 156 s |
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