By Harald FranzenPosted 02.04.2003 at 12:14 pm 0 Comments
How easy is it to make ricin poison? "You just get a bunch of castor beans and grind them up," says immunologist Ellen Vitetta of the University of Texas Southwestern Medical Center. Stockpiles were recently discovered in Afghan caves used by al Qaeda; Iraq is also known to have supplies. Scientists have worked for years to find a vaccine (the poison is so hard to recognize in its victims that an antidote would be impractical) but without success-until Vitetta and colleagues came upon it.
What you look like and other hereditary traits depend as much on the amount of proteins your genes produce as anything else.
By Gunjan SinhaPosted 02.03.2003 at 7:22 pm 0 Comments
The Paper: Variation in Gene Expression Within and Among Natural Populations.
The Journal: Natural Genetics, September 3, 2002
The Authors: Marjorie Oleksiak, Douglas Crawford, Gary Churchill
The Gist: What you look like and other hereditary traits depend as much on the amount of proteins your genes produce as anything else.
You stated in November´s FYI (â€Just the Facts: Beerâ€) that sake is a type of beer rather than a wine, because rice is a cereal grain. Yet rye and wheat, from which vodka and whiskey are made, are also cereal grains. Is it how the cereal grain is â€workedâ€ that makes the resulting liquid a beer or a spirit?
The shots of hockey´s hardest shooters travel at slightly more than 100 mph.
On a relatively long-distance shot, 60 feet away from the goal, the goaltender will have 0.45 seconds to react.
Early hockey sticks were stiff and heavy (between 26 and 30 ounces) and made from a single piece of wood. Many modern sticks have shafts made from aluminum, graphite, fiberglass, titanium or Kevlar, to which wooden blades are glued (they weigh about 18 ounces). The sticks have varying degrees of flex, which adds to the power generated.
Popular Science had a conversation with one of the most visionary developers of autonomous subs.
By Greg MonePosted 01.15.2003 at 12:25 pm 0 Comments
Clayton Jones of Webb Research in East Falmouth, Massachusetts, is a lead developer of the Slocum Glider, which uses an innovative thermal engine to power its undersea journeys. Instead of motoring back up to the surface after a dive, which eats up battery life, the thermal glider powers itself by capitalizing on the drastic temperature and density changes between deep ocean and surface water.
By Rebecca SklootPosted 01.14.2003 at 6:29 pm 0 Comments
When I first learned about the structure of DNA in an undergraduate genetics class, my instructor-a British scientist and feminist-hammered one point into our heads: James Watson and Francis Crick did not discover the famous double helix alone. The x-ray photograph that led to their breakthrough came from the lab of a little known King's College scientist named Rosalind Franklin. No one gave her credit for her work, my instructor said, so Franklin died in scientific obscurity.
The lively story of the race to sequence and control the human genome.
By Rebecca SklootPosted 01.14.2003 at 5:48 pm 0 Comments
The Human Genome Project was launched in the mid-1980s, and with it came a new era of science: One fiercely divided between those fighting for patents and profits, and those fighting for free exchange of information. In her new book, The Gene Masters, Ingrid Wickelgren tells the lively story of the race to sequence and control the human genome. In a style that's often elegant and exciting, she chronicles one of the most important scientific ventures in recent history with the right mix of action, drama, and good hard science.