Uncategorized
- Chemistry
New sensor can ID dangerous bacteria
When newly created organic molecules, called TWTCPs, are attached to a porous silicon wafer and exposed to a certain class of bacterium, the wafer changes color.
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Leonardo’s Bridge
In 1502, Leonardo da Vinci made a simple drawing of a great, 240-meter bridge that was to span an inlet at the mouth of the Bosporus River in what is now Turkey. The bridge was never built, but Leonardo’s design has been reproduced in a wooden bridge for pedestrians over a highway in Norway. Artist […]
- Health & Medicine
The Science of Secretin
The discovery that a gut hormone also exists in the brain may shed light on the origins of autism.
- Health & Medicine
Reducing blood pressure in the lungs
A new drug seems to help reduce abnormally high blood pressure in the lungs, a condition that can trigger heart failure.
- Health & Medicine
Seizures and reproductive ills linked
Abnormal electrical signaling in the brains of women with epilepsy may alter sex hormone cycling and explain why epileptic women seem to have a higher rate of reproductive disorders than do other women.
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When ground squirrels cry badger
Richardson's ground squirrels respond differently to alarm calls depending on whether the caller has a history of false alarms.
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Desert beetle catches fog on its back
The bumpy back of a desert beetle has inspired a design for collecting water from fog.
- Math
Online Bidding Tips
The auction Web site known as eBay has become a vast marketplace, bringing together buyers and sellers of all sorts of goods. It has also become a handy laboratory for testing ideas in economics about markets and prices. In general, auctions ought to serve as an efficient mechanism for setting prices. Consequently, you would expect […]
- Math
Online Bidding Tips
The auction Web site known as eBay has become a vast marketplace, bringing together buyers and sellers of all sorts of goods. It has also become a handy laboratory for testing ideas in economics about markets and prices. In general, auctions ought to serve as an efficient mechanism for setting prices. Consequently, you would expect […]
- Astronomy
Extrasolar planets: More like home
A trove of newly discovered planets orbiting other stars suggests that the solar system may not be the oddball it had begun to seem.
- Animals
Finches figure out solo how to use tools
The woodpecker finches of the Galápagos, textbook examples of birds that use tools, pick up their considerable skills without copying each other.
- Earth
Farmers could help heal Gulf of Mexico
Farm-derived nutrients in the Mississippi River that create a huge dead zone in the Gulf of Mexico could probably be substantially reduced if farmers simply used a little less fertilizer.
