Uncategorized
- Health & Medicine
Gene therapy thwarts hepatitis C in mice
Gene therapy that induces infected liver cells to self-destruct slows hepatitis C dramatically in mice.
- Physics
Taking a shine to number 100
Scientists for the first time literally shed light on the properties of radioactive fermium.
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For those of us who know how to draw and understand the varieties of linear perspective, David Hockney’s proposal that the old masters used optical aids rings true. One of his examples will suffice: The uncanny accuracy of difficult-to-depict patterns in folding cloth in works of the early 1400s is an indication that optical aids […]
- Physics
Reflections on Art
By dissecting famous paintings in new ways, scientists are testing the veracity of artist David Hockney's controversial theory that some masters of Renaissance art secretly used optical projection devices.
- Math
Measuring with Jugs
Given a 5-liter jug, a 3-liter jug, and an unlimited supply of water, how do you measure out exactly 4 liters? In her book In Code: A Mathematical Journey, Sarah Flannery gives this classic brainteaser as an example of the sorts of playful puzzles that her father, a mathematics lecturer at the Cork Institute of […]
- Physics
Light Switch: Crystal flaws tune the wavelengths
By tweaking the crystal structure of the semiconductor gallium arsenide, researchers may have found a way to make cheaper components for fiberoptic networks.
- Health & Medicine
Flawed Therapy: Hormone replacement takes more hits
Elderly women taking estrogen and progestin are more likely to develop dementia, including Alzheimer's disease, and stroke than are women not taking the hormones.
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Gut Check
The normal microbial inhabitants of our intestines do a lot for their host.
- Astronomy
Red Team, Blue Team: Galaxy survey shows that color matters
Using the largest survey of galaxies ever compiled, astronomers have found that the cosmos divides sharply along color lines.
- Planetary Science
New view of Earth
On May 8, 2003, scientists pointed a camera on board the Mars Global Surveyor probe back at Earth and captured the first image from another planet that shows our world as more than a point of light.
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Memorable Shot: Smallpox vaccine has lasting effect
People vaccinated against smallpox decades ago may retain significant immunity to the virus that causes the disease.
- Agriculture
Mad Cow Future: Tests explore next generation of defenses
As Canadian health officials investigate mad cow disease within the country's borders, researchers are already working on the next generation of defenses.
