News
- Health & Medicine
Conduit to the Brain: Particles enter the nervous system via the nose
Tiny airborne particles can apparently infiltrate the brain by shimmying up the nerve that governs smell.
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Sleeper Effects: Slumber may fortify memory, stir insight
In two separate studies, researchers found that a specific sleep stage may amplify recent memories and that sleep can inspire problem-solving insights.
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Pushing Cancer over the Edge: Compounds trigger tumor-cell suicide
Compounds that free cancer cells to commit suicide slow tumor growth.
- Plants
Dawn of the Y: Papaya—Glimpse of early sex chromosome
Genetic mappers say that the papaya plant has a rudimentary Y chromosome, the youngest one in evolutionary terms yet found, offering a glimpse of the evolution of sex chromosomes.
- Planetary Science
Spirit Gets Its Wheels Dirty: Mars rover begins scientific work
Spirit, the rover that landed on Mars on Jan. 3, last week began studying the rocks and soil at its landing site.
- Health & Medicine
Cluster Buster: Might a simple sugar derail Huntington’s?
A study in mice with a disease resembling Huntington's shows that a simple sugar impedes the protein aggregation that kills brain cells.
- Health & Medicine
Viruses depend on shocking proteins
To replicate within a cell, a bird virus must force the cell to make certain proteins.
- Health & Medicine
Drugs slow aging in worms
Drugs that defuse so-called free radicals lengthen a worm's life span by more than 50 percent.
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Whatever that is, it’s scary
Tammar wallabies that have lived away from mammalian predators for more than 9,000 years still seem to recognize the appearance of danger.
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Kookaburra sibling rivalry gets rough
The youngest kookaburra in the nest doesn't have a lot to laugh about.
- Astronomy
Gang of four: Debut of a big telescope
In the desert of northern Chile, a fourth 8.2-meter telescope opened for business, completing a quartet known as the Very Large Telescope.
- Astronomy
Stellar motions provide hole-y data
Measuring for the first time the acceleration of stars near the dense core of our galaxy, astronomers have obtained more precise information on the location and density of the black hole that lurks there.
