Life
We summarize the week's scientific breakthroughs every Thursday.
- Health & Medicine
Dengue fever spreads in a neighborly way
Individual strains of dengue spread locally, and new infections cluster near the home of the first person affected.
- Health & Medicine
Random mutations play large role in cancer, study finds
Mistakes made while copying DNA account for more mutations in cancer cells than environment or inheritance do.
- Genetics
In 1967, LSD was briefly labeled a breaker of chromosomes
Claims that the hallucinogenic drug damaged DNA were quickly rejected. But questions remain about how LSD works.
- Animals
Female guppies with bigger brains pick more attractive guys
A larger-brained female guppy may pick primo males, but all that mental machinery costs her in other ways.
- Paleontology
Anatomy analysis suggests new dinosaur family tree
A new analysis rewrites the dinosaur family tree, splitting up long-recognized groups.
- Neuroscience
Lab tests aren’t the answer for every science question
Acting Editor in Chief Elizabeth Quill discusses the value of observational science.
- Animals
Colorful pinwheel puts a new spin on mouse pregnancy
Among the winners of the 2017 Wellcome Image Awards is a rainbow of mouse placentas that shows how a mother’s immune system affects placental development.
- Animals
Tool use in sea otters doesn’t run in the family
A genetic study suggests that tool-use behavior isn’t hereditary in sea otters, and that only some animals need to use tools due to the type of food available in their ecosystem.
- Health & Medicine
Cancer cells cast a sweet spell on the immune system
Tumors have surface sugars that persuade the body’s defenses to look the other way. New therapies are being devised to break the trance.
- Life
Life on Earth may have begun as dividing droplets
Chemical droplets could split and reproduce in the presence of an energy source, new computer simulations suggest.
- Plants
Genetic switch offers clue to why grasses are survival masters
Scientists have identified a genetic switch that helps grasses regulate their carbon dioxide intake.
- Paleontology
Under lasers, a feathered dino shows some skin
Laser-stimulated fluorescence reveals detailed images of soft tissue in a feathered dinosaur from 160 million years ago.
