Uncategorized
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Blocked gene gives mice super smell
Deactivating a single gene can produce mice with an abnormally sharp sense of smell.
- Humans
Letters from the Feb. 28, 2004, issue of Science News
It’s tough in there In the arts, we say that material, such as paper, that deteriorates readily because of its composition (“News That’s Fit to Print—and Preserve,” SN: 1/10/04, p. 24: News That’s Fit to Print—and Preserve) has “internal vice.” I suppose that could be said of newspapers on several grounds. Lawrence Wallin Santa Barbara, […]
- Math
Sculpting with a Twist
There’s more than one way to slice a bagel. A bagel (or a doughnut) can serve as a physical model for a mathematical surface called a torus. You can slice it horizontally (or longitudinally) so that you end up with two halves, each containing a hole. That’s great for making sandwiches because the cut exposes […]
- Health & Medicine
Inflammatory Fat
Immune system cells may underlie much of the disease-provoking injury in obese individuals that has been linked to their excess fat.
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The genetic link from obesity to macrophage production to inflammation to diseases in this article seems convincing. On an ecological scale, inflammation is an acute response to environmental insult, while fat is a chronic response, through its role in sequestering toxins. Perhaps the new research reveals a genetic program to arm the body’s defenses both […]
- Computing
Straining for Speed
Hitting fundamental limits on how small they can make certain structures within semiconductor transistors, chip makers are deforming the silicon crystals from which those transistors are made to eke out some extra speed.
- Astronomy
Finding the star that was
Sifting through archival images, astronomers have identified the star whose explosive demise was recorded by telescopes last year.
- Chemistry
Radical molecule could produce plastic magnets
A team of chemists has synthesized an unusual organic molecule that could lead to cheaper and lighter magnets.
- Physics
Nuclear pudding—to go
Moving at nearly the speed of light, atomic nuclei hurtling through a huge particle collider may become mostly dense, flattened puddings of nuclear particles known as gluons.
- Health & Medicine
Putting the brakes on toxic shock
Scientists have discovered the cascade of molecular events that underpins many cases of toxic shock syndrome.
- Physics
New supergas debuts
A cloud of ultracold potassium atoms, manipulated by means of a magnetic field, has coalesced into a new super form of matter called a fermionic condensate.
- Health & Medicine
Some T cells may be a fetus’ best friend
While pregnant, mice overproduce a kind of T cell that reins in other immune cells that might target the fetus.
