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Amazon.com to Acquire Diapers.com and Soap.com

Technology

SEATTLE, Nov 08, 2010 (BUSINESS WIRE) — Amazon.com, Inc. today announced that it has reached an agreement to acquire Quidsi, Inc., which operates Diapers.com, an online baby care specialty site, and Soap.com, an online site for everyday essentials.

“I’m not sure which is more unpleasant–changing diapers, paying too much for them, or running out of them,” said Jeff Bezos, Founder and CEO of Amazon.com. “This acquisition brings together two companies who are committed to providing great prices and fast delivery to parents, making one of the chores of being a parent a little easier and less expensive.” (more…)

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Study Shows Extreme Form of Pregnancy-Related Morning Sickness Could be Genetic

Health, Science

*Pregnant women whose sisters had condition are 17 times more likely to have it*

Approximately 60,000 pregnant women are hospitalized each year due to hyperemesis gravidarum (HG), an extreme form of nausea and vomiting that endangers their lives and often forces them to reluctantly terminate their pregnancies.  

And for women with sisters, mothers and grandmothers on either side of the family who have experienced extreme morning sickness during pregnancy, the risk of HG may be heightened, according to a new study led by researchers from UCLA and the University of Southern California.  (more…)

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Volcanic Eruptions Affect Rainfall over Asian Monsoon Region

Environment, Nature

Scientists have long known that large volcanic explosions can affect the weather by spewing particles that block solar energy and cool the air.

Some suspect that extended “volcanic winters” from gigantic eruptions helped kill off dinosaurs and Neanderthals.

In the summer following Indonesia’s 1815 Tambora eruption, frost wrecked crops as far away as New England, and the 1991 blowout of the Philippines’ Mount Pinatubo lowered average global temperatures by 0.7 degrees F — enough to mask the effects of greenhouse gases for a year or so. (more…)

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Water Flowing Through Ice Sheets Accelerates Warming, Could Speed Up Ice Flow, Says New Study

Environment

Melt water flowing through ice sheets via crevasses, fractures and large drains called moulins can carry warmth into ice sheet interiors, greatly accelerating the thermal response of an ice sheet to climate change, according to a new study involving the University of Colorado at Boulder.

The new study showed ice sheets like the Greenland Ice Sheet can respond to such warming on the order of decades rather than the centuries projected by conventional thermal models. Ice flows more readily as it warms, so a warming climate can increase ice flows on ice sheets much faster than previously thought, said the study authors. (more…)

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New 3-D Model of RNA ‘Core Domain’ of Enzyme Telomerase May Offer Clues to Cancer, Aging

Health, Science

A model representation of telomerase's RNA "core domain," determined by Juli Feigon, Qi Zhang and colleagues in Feigon's UCLA laboratory. Image credit: Juli Feigon, UCLA Chemistry and Biochemistry/PNAS

Telomerase is an enzyme that maintains the DNA at the ends of our chromosomes, known as telomeres. In the absence of telomerase activity, every time our cells divide, our telomeres get shorter. This is part of the natural aging process, as most cells in the human body do not have much active telomerase. Eventually, these DNA-containing telomeres, which act as protective caps at the ends of chromosomes, become so short that the cells die.

 

But in some cells, such as cancer cells, telomerase, which is composed of RNA and proteins, is highly active and adds telomere DNA, preventing telomere shortening and extending the life of the cell. 

UCLA biochemists have now produced a three-dimensional structural model of the RNA “core domain” of the telomerase enzyme. Because telomerase plays a surprisingly important role in cancer and aging, understanding its structure could lead to new approaches for treating disease, the researchers say.  (more…)

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The Genetics of Self-Incompatibility

Nature, Science

*Petunias show that the mechanisms behind inbreeding prevention are similar to immune response*

About the image: The female part of the petunia flower secretes an enzyme that is designed to deter pollen tube growth, thereby preventing fertilization. However, in the cases that the pollen has come from a genetically different plant, the pollen produces its own protein that combats the pistil’s enzyme. With the enzyme out of the way, the pollen tube can keep growing and fertilization can occur. Image credit: Zina Deretsky, National Science Foundation

Inbreeding is a bad strategy for any organism, producing weak and problematic offspring. So imagine the challenge of inbreeding prevention in a plant where male and female sexual organs grow right next to each other! Such is the genetic conundrum faced by the petunia. (more…)

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Scientists to Spy on People’s Dreams and Thoughts

Culture, General, Science

Image credit: Wikipedia

Until now it was believed that a person is unable to read the thoughts of fellow human beings. “Spying” on the dreams of another person appeared unrealistic. However, recent research by American scientists revealed that both these things are quite possible. Overly complex devices and paranormal abilities are not required to do so.

Recently, a respectable scientific journal Nature published an article that ten years ago would have been considered a fiction and would not have been publication at all. A group of American researchers led by Dr. Moran Cerf claims to have found a way to electronically records and decipher human dreams and thoughts. No complicated devices are required. The entire transcript can successfully go through an electroencephalograph – a device that for decades has been used by neuroscientists around the world. (more…)

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