archive: SETI EXN News Bulletin for May 20, 1999

SETI EXN News Bulletin for May 20, 1999

Larry Klaes ( lklaes@bbn.com )
Thu, 20 May 1999 08:16:28 -0400

>From: sciencebulletin@exn.ca (EXN Science News Bulletin)
>To: lklaes@bbn.com
>Subject: EXN News Bulletin for May 20, 1999
>Date: Thu, 20 May 1999 06:10:04 -0400
>X-Mailer: Allaire Cold Fusion 3.1
>
>
>
>The EXN News Bulletin for May 20, 1999
>
>Your weekly roundup of stories making news in the world of science,
technology, nature and adventure.
>
>
>
>
>Genetically modified crops in Canada
>
>A new study that suggests the pollen of a genetically modified variety of
corn may be lethal to some monarch butterfly larvae is promising to refocus
debate here in Canada over the use of genetic engineering technology in the
production of food crops.
>The study, by researchers at Ithaca, New York's Cornell University, found
that nearly half the monarch butterfly larvae they tested died after only
four days of feeding on leaves dusted with the pollen of Bt-corn - a
popular form of genetically engineered corn. In contrast, none of a group
of identical larvae died after being fed leaves dusted with the pollen of
non-genetically engineered corn plants. The weight of those larvae exposed
to the modified pollen was also significantly lower than their counterparts
on the other leaves. Bt-corn has been specifically engineered so that its
tissues are toxic to several insect pests.
>
>
> - - > http://exn.ca/html/templates/mastertop.cfm?ID=19990519-53
>
>* * * * * * * * * * * * * * * * * * * * * *
>
>Mammoth cyclone observed on Mars
>
>It's hard to imagine a storm system four times the size of Saskatchewan.
But that's just what the Hubble Space Telescope detected recently near the
North Pole of Mars. In fact, it's the largest such "spiral" storm ever
recorded on the Red Planet three times larger than previous storms
observed there. At over 1,700 kilometres across, this storm is not,
however, comprised of dust being whipped around in the atmopshere, typical
of a lot of Martian weather. It's actually composed of water ice clouds,
similar to storm systems on Earth.
>
> - - > http://exn.ca/html/templates/mastertop.cfm?ID=19990519-54
>
>* * * * * * * * * * * * * * * * * * * * * *
>
>Curing the common cold
>
>The long-sought-after cure for the common cold may still be a long way
away. But researchers at the Medical University of South Carolina say they
may have found a way to give a leg up to people who want to avoid a nasty
bout with the cold bug.
>Researchers at the Charleston medical centre say they found the drug
tremacamra was extremely good at helping study subjects avoid getting
infected with a well known, laboratory-controlled cold virus. They also say
volunteers who were deliberately infected with the virus and then given
tremacamra 12 hours later suffered fewer symptoms than those who received a
placebo.
>
> - - > http://exn.ca/html/templates/mastertop.cfm?ID=19990518-51
>
>* * * * * * * * * * * * * * * * * * * * * *
>
> Breathing life into an 85 million-year-old flying reptile
>
> An ancient flying reptile is being brought back from extinction at the
Canadian Museum of Nature. A team of scientists and artists have come
together to reconstruct two, life-size pterosaurs to "fly" in the Ottawa
museum's atrium. "We wanted something that looked like we gave it CPR and
it started to breathe," says Dr. Steve Cumbaa, a vertebrate paleontologist
at the museum. They've succeeded. Two male Pteranodon longiceps are caught
soaring in mid-flight competing for a prehistoric fish much like they
might have appeared 85 million years ago. The exhibit is both a work of art
and of science, taking an artist's deft paint strokes to fill in the gaps
of scientific knowledge.
>
> - - > http://exn.ca/html/templates/mastertop.cfm?ID=19990518-52
>
>* * * * * * * * * * * * * * * * * * * * * *
>
>Flying with the help of virtual reality
>
>August 6, 1997 228 people die when a Korean Air 747 plunges into a hill
at night on the island of Guam December 20, 1995 160 die when an
American Airlines 757 crashes into a mountainside near Cali, Colombia
>When it comes to bad weather, the inky blackness of night or a deadly
combination of both, pilots of aircraft are often at the mercy of what they
can see from the cockpit. And in those specific types of conditions, that
means not a lot. So in an effort to give flight crews better "situational
awareness", NASA is now in the midst of developing a Synthetic Vision
system that uses virtual reality-like monitors in the cockpit to give
pilots a picture of the terrain they're flying through -- whether they can
see it from the windows or not.
>
> - - > http://exn.ca/html/templates/mastertop.cfm?ID=19990517-55
>
>* * * * * * * * * * * * * * * * * * * * * *
>
>Right whale in the wrong place at the wrong time
>
>If you are a whale, and it is the waning hours of the twentieth century,
this is where you don't want to be: the shipping lanes along the East Coast
of North America. But that is exactly where the North Atlantic right
whales -- the rarest of all the big whales -- like to spend their time.
And that's where nearly half of all the right whales that are killed meet
their fate.
>
>
> - - > http://exn.ca/html/templates/mastertop.cfm?ID=19990512-51
>
>* * * * * * * * * * * * * * * * * * * * * *
>
>*Star Wars*
>
>Realities Beyond The Myth: exn.ca explores the scientific possibilities of
Star Wars.
>
> - - > http://exn.ca/starwars
>
>* * * * * * * * * * * * * * * * * * * * * *
>
>
>
>
>EXN Delivers a wealth of news you can use -- and enjoy:
>
>Updated Daily:
>
> Science News
> - - > http://exn.ca/science
> Technology News
> - - > http://exn.ca/technology
> @discovery.ca TV
> - - > http://exn.ca/@discovery.ca
>
>
>Updated During The Week:
> Nature
> - - > http://exn.ca/nature
>
>For information on all our programming on the Discovery Channel:
> - - > http://exn.ca/onair
>
>For weekly program highlights on the Discovery Channel emailed right to
your inbox:
> - - > http://exn.ca/onair/doortodoor
>
>
>
>
>This email was sent to: lklaes@bbn.com
>
>If at any time you want to leave this emailing, go to:
> - - > http://exn.ca/science
>
>and look down (way down) the right-hand side of the screen for the LEAVE
LIST button.
>
>
>
>
>
>
>