Uncategorized
- Humans
Letters from the March 4, 2006, issue of Science News
Impure thoughts Epidemiologist Scott Davis warns, “Melatonin supplements are not regulated” the way drugs are. … “There may be all kinds of impurities and contaminants” (“Bright Lights, Big Cancer: Melatonin-depleted blood spurs tumor growth,” SN: 1/7/06, p. 8). Are you really going to tell me that you aren’t going to take melatonin—if you’re convinced that […]
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Babies show budding number knowledge
By 7 months of age, babies often can tell the difference between two and three entities, at least under certain circumstances.
- Ecosystems
Corals don’t spread far from their birthplaces
Creating a marine protected area might offer only limited benefits to vulnerable corals, because viable coral larvae don't appear to spread far from their points of origin.
- Earth
China’s deserts expand with population growth
Carried forward by winds and sandstorms, the dunes of northern China are expanding at an unprecedented rate, primarily because of human activities that have contributed to erosion.
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- Astronomy
Chasing a stellar blast
An exploding star recently discovered in a nearby galaxy may be a milestone in the study of type 1a supernovas.
- Tech
Making the most of chip fabrication
An advance in the way microelectronic circuit patterns are created may help preserve conventional chip-making methods beyond the currently predicted date of their demise.
- Tech
A dim view of biologic and chemical agents
Microscopic gel balls that act as lenses may become the active ingredient of quick-acting sensors for bioagents and chemicals.
- Tech
Tiny ticker
Researchers have demonstrated that they can control how frequently a DNA-based nanodevice changes between two forms.
- Ecosystems
Saving Sturgeon
Sturgeon species around the world are in trouble, which is why humans will increasingly be stepping in to give them a big assist.
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Eat Smart
Your daily diet may have an impact on your brain's resiliency in the face of injury or disease.
- Math
The Galois Story
Mystery still surrounds the tragic death of young mathematician Évariste Galois.
