Life
We summarize the week's scientific breakthroughs every Thursday.
- Animals
Snake moms-to-be crave toxic toads
The snake Rhabdophis tigrinus seeks out toxic toads to eat when breeding. The snakes can then pass the poisons on to her offspring as chemical defenses.
- Neuroscience
Serotonin lies at the intersection of pain and itch
Serotonin may help relieve pain, but it also causes itch. A study shows why scratching just makes it worse.
- Genetics
Human thoughts control mouse genes
Human brain waves trigger light that activates protein production in rodents.
- Neuroscience
Chronic marijuana use may alter the brain
Long-term marijuana use may lead to reduced gray matter and increased white matter connectivity in the brain.
- Genetics
Genes tell tale of cat domestication
A peek into cats’ genetic makeup may help reveal how hissing wild felines became purring tabbies.
- Neuroscience
Brain regions linking odors to words pinpointed
Scientists have pinpointed two brain regions involved in linking odors to their names, with implications for why smells are hard to identify.
- Life
Epic worldwide effort explores all of insect history
A whopper of a genetic analysis fits all living orders of insects into one genealogical evolutionary tree.
- Animals
Just enough fat is good for an elephant seal
Fat affects the buoyancy of marine mammals. As elephant seals get fatter, they can spend less energy swimming and more time foraging, a new study finds.
- Genetics
DNA from 37,000-year-old human hints at early European history
DNA from a roughly 37,000-year-old Homo sapiens skeleton supports recent findings about when ancient humans and Neandertals interbred.
- Neuroscience
For a friendlier zebra finch, just add stress
Adding stress hormones to the diet of developing zebra finches produced birds that were social butterflies.
- Life
Norovirus grown in lab, with help from bacteria
Norovirus, famous for sickening cruise ship passengers, has finally been grown in human cells in a lab, offering scientists a chance to test new therapies.
- Animals
Bats jam each other in echolocation battles for food
By blaring a special call at just the right instant, Mexican free-tailed bats can ruin each other’s sonar-guided swoops toward prey.
