Life
We summarize the week's scientific breakthroughs every Thursday.
- Ecosystems
Bluebird moms inadvertently fuel wars between species
Extra hormones delivered to eggs holding sons in tough times end up driving one bluebird species to chase off another
- Animals
Ocean animals have bulked up since ancient eras
Marine animals today are much larger on average than they were in the Cambrian Period.
- Animals
Cliff swallow breeding thwarted by bird version of bedbugs
A 30-year study of cliff swallows in Nebraska finds that the birds will abandon nests, rather than have a second brood, when their homes are infested with swallow bugs.
- Genetics
Catalog of DNA modifications produces surprises
A map of chemical modifications of DNA and its associated proteins shows how the genome changes during development and disease.
- Neuroscience
Blame pot munchies on nerve cells that normally nix appetite
Pot munchies demystified: Marijuana hijacks fullness nerve cells, making them send hunger signals instead.
- Life
Insulin-suppressing hormone discovered
A newly discovered hormone suppresses insulin production and secretion in fruit flies and maybe in humans.
- Ecosystems
Fooled you! Whirling tails of luna moths deflect bat attacks
Luna moths can use their tails to reflect the echolocation pings of bats, tricking the predators into striking the tails instead of less expendable body parts.
- Neuroscience
Bipolar risk boosted by accumulation of rare versions of genes
A buildup of rare versions of genes that control nerve cell activity contributes to the genetic risk of bipolar disorder.
- Environment
A coast-to-coast picture of America’s cacophony of sounds
The National Park Service mapped noise across the United States.
- Genetics
For penguins, it’s a matter of no taste
Penguins lack taste genes for bitter, sweet and umami.
- Genetics
Ebola virus evolution tracked by genetic data
Analysis of Ebola genomes shows how the virus has evolved and some of the mutations that may thwart treatments.
- Life
To deal with sexual conflict, female bedbugs get flexible
Female bed bugs evolved an elastic underbelly to tolerate violent mating, a new study suggests.
