Humans
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We summarize the week's scientific breakthroughs every Thursday.
- Psychology
Psychopaths get time off for bad brains
In a survey, judges tended to say they would reduce sentences for criminals defended with biological evidence.
By Bruce Bower - Health & Medicine
Brain’s hidden sewers revealed
Specialized cells host a hitherto unknown cleansing system.
- Life
Mantis shrimp flub color vision test
Unexpectedly poor results on crustacean eye exams suggest there’s another way to perceive color.
By Susan Milius - Earth
Antibacterial agent can weaken muscle
Triclosan impairs the power of the heart and other muscles in two species and at relatively low doses.
By Janet Raloff - Life
Smell deals with deprivation differently
One odor-related brain region called the orbitofrontal cortex keeps the sense primed for resumed input during a cold.
- Humans
Good times led to grisly custom
Ancient Chileans developed artificial mummification after an increase in the numbers of living and dead people made naturally preserved bodies hard to ignore.
By Bruce Bower - Tech
Camera hack can spot cleaned-up crimes
Exploiting a standard tool of art conservation can help police find painted-over bloodstains.
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- Chemistry
Scaffolding props up failing hearts
Hydrogel treatment stimulates cell repair and blood vessel regrowth in pig experiments.
- Humans
New fossils hint at ancestral split
Jaw and face bones suggest two Homo species lived in East Africa nearly 2 million years ago.
By Bruce Bower - Health & Medicine
Thinner isn’t always better in diabetes
Normal-weight people who develop diabetes have higher mortality than people who are overweight or obese at the disease’s onset
By Meghan Rosen - Humans
North African Diaspora written in genes
DNA analysis of people from 15 groups identifies distinct groups and migrations.