Uncategorized
- Earth
Catch Zero
It generally has taken less than a generation for modern, industrial-scale fishing, once deployed in a new plot of ocean, to exhaust the vast majority of the sea’s edible bounty and leave behind decimated ecosystems and depleted economic opportunities.
- Physics
Mastering the Mixer
Almost anything can happen when a batch of grains or powders is mixed—including striking, swirling patterns and spontaneous, total separation—so researchers are playing with beads, salt, sand, and other particles in simple tumblers to find out what's going on.
- Earth
Greenland ice variation appears normal
Changes in snowfall observed in parts of southern Greenland between 1978 and 1988 appear to be normal if gauged against the variations recorded in ice cores over the past 400 years.
- Earth
Cooking up a key chemical of life
Researchers have simulated the conditions and ingredients found at hydrothermal vents to create pyruvic acid, an organic chemical vital for cellular metabolism.
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Show me the data
A debate has broken out over whether neuroscientists should share the voluminous data that they generate in their experiments.
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Traumas trip up inner-city girls
Inner-city teenage girls may often experience a severe stress reaction that makes it more difficult for them to succeed in school.
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In response to your article, I suggest that at least some inner-city boys are tripped up by violence around them as much as are the girls discussed in the article. Even though women experience shame about mental illness or intense emotional disturbance, it’s socially OK to be a woman and have an anxiety illness. It’s […]
- Astronomy
A new receiver for alien broadcasts
A $12.5 million grant will help build the world's largest telescope designed to search for radio broadcasts from alien civilizations.
- Astronomy
Taking a census of brown dwarfs
Researchers have completed the most thorough census to date of brown dwarfs in stellar clusters and have confirmed earlier findings about these failed stars.
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Down the Tubes: Amino acid proves key to plant reproduction
An amino acid that human brain cells communicate with also has a role in plant sex.
- Health & Medicine
Metal’s Mayhem: Cadmium mimics estrogen’s effects, thwarts DNA repair
Cadmium causes endocrine disruption by mimicking estrogen in rats and also thwarts routine DNA repair, causing mutations, two studies show.
- Materials Science
Tiny Labs: Polymers on silicon chip catch, release proteins
In a step toward a new laboratory-on-a-chip technology, researchers have grown a dense polymer film on a silicon wafer that takes up and releases proteins on command.
