Uncategorized
- Planetary Science
Cometlike crashes produce building blocks of life
Amino acids in collision residue support importance of extraterrestrial impacts.
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- Genetics
Genes for body symmetry may also control handedness
Lefties and righties can thank same genes that put hearts on left side for hand dominance, study of thousands of people’s DNA suggests.
- Psychology
Bad acts spark a ‘cheater’s high’
Committing low-stakes acts of dishonesty enhances perpetrators’ moods.
- Earth
Buried Saharan rivers might have been early expressways
Humans might have migrated across the arid region along three once-lush waterways.
- Physics
Notorious ‘Big G’ gets a little larger
Gravitational constant is difficult to measure, but physicists calculate with new number.
- Animals
Young insect legs have real meshing gears
Tiny teeth on hiplike structures keep legs in sync, allowing juvenile planthoppers to jump.
- Astronomy
At last, Voyager 1 slips into interstellar space
Solar blast data provides definitive evidence that Voyager 1 has cruised beyond the heliosphere and into interstellar space.
- Health & Medicine
Alzheimer’s disease protein structure may vary among patients
Two people with different symptoms had amyloid-beta fibers with different shapes.
- Animals
Humpbacks make a comeback in British Columbia
Whale numbers double at a feeding site in Canada.
- Health & Medicine
Vaccine stops deadly sand-fly-spread scourge in animal test
A DNA vaccine triggers protection against the sand-fly-borne scourge Leishmania.
- Health & Medicine
Szechuan pepper taps at nerve fibers
The spice makes lips tingle at 50 beats per second, researchers find.
