Life
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We summarize the week's scientific breakthroughs every Thursday.
- Life
Chemical evidence paved way for discovery of early life
The discovery in 1964 of compounds related to chlorophyll in billion-year-old rocks pushed back the timing of life’s origins.
- Paleontology
Feathered dinosaurs may have been the rule, not the exception
Newly discovered fossil suggests feathers may have been common among all dinosaur species.
By Meghan Rosen - Genetics
Airborne MERS virus found in Saudi Arabian camel barn
The air in a Saudi Arabian camel barn holds genetic fragments of MERS, a new study shows.
- Ecosystems
Moose drool can undermine grass defenses
Saliva from moose and reindeer sabotages plants’ chemical weaponry.
By Susan Milius - Life
Mouse sperm parties make for straight swimmers
Mouse sperm hunt for eggs in packs, but grouping doesn’t boost speed. Instead, gangs of the reproductive cells move in straighter lines.
By Nsikan Akpan - Animals
Elephant’s big nose wins most sensitive sniffer
A genetic survey reveals that African elephants harbor more smell sensors than any other known animal.
By Nsikan Akpan - Neuroscience
For rats, a break from stress isn’t worth the relief
An unplanned vacation from stress might seem like a good idea, but a new study in rats shows that unpredictable escapes from pressure produce more strain on the first day back.
- Life
Bacteria’s bodies do whirlies to help them swim
Kidney-shaped Caulobacter crescentus bacteria swim with both their corkscrew propellers called flagella and their bodies, scientists say.
- Genetics
Hints about schizophrenia emerge from genetic study
From thousands of genomes, researchers pinpoint dozens of DNA changes that may underlie schizophrenia
- Animals
Termite soldiers locate battles with vibrational clues
To locate invasions, termite soldiers listen for millisecond-long delays in vibrational distress signals sent out by other soldiers.
By Susan Milius - Health & Medicine
Carbs and gut microbes fuel colon cancer
Western nations experience high levels of colon cancer, and carbo-loading gut microbes might explain why, says a new study in mice.
By Nsikan Akpan - Microbes
Gut microbes help packrats eat poison
Antiobiotics and fecal transplants in desert woodrats shown that gut microbes can help plant-eaters metabolize toxins.