Life
We summarize the week's scientific breakthroughs every Thursday.
- Paleontology
Hyenas roamed the Arctic during the last ice age
Two teeth confirm the idea that hyenas crossed the Bering land bridge into North America, a study finds.
- Life
Norovirus close-ups might help fight stomach flu
Detailed views of a common stomach virus that causes vomiting and diarrhea could aid vaccine and disinfectant development.
- Astronomy
Readers boggled by black hole behemoth
Readers had questions about the first image of a black hole and a chytrid fungus.
- Science & Society
Science hasn’t managed to span the diagnosis gap
Editor in Chief Nancy Shute discusses how scientists are devising better diagnostic tools to detect diseases.
- Ecosystems
Many of the world’s rivers are flush with dangerous levels of antibiotics
Antibiotic pollution can fuel drug resistance in microbes. A global survey of rivers finds unsafe levels of antibiotics in 16 percent of sites.
- Environment
Some Canadian lakes still store DDT in their mud
Yesterday’s DDT pollution crisis is still today’s problem in some of Canada’s lakes.
- Archaeology
People may have smoked marijuana in rituals 2,500 years ago in western China
Cannabis may have been altering minds at an ancient high-altitude cemetery, researchers say
- Animals
Bats are the main cause of rare rabies deaths in the U.S.
In the United States, bats are mostly to blame for rabies deaths, while rabies transmitted by overseas dogs comes in second.
- Health & Medicine
Extra fingers, often seen as useless, can offer major dexterity advantages
Two people born with six fingers on each hand can control the extra digit, using it to do tasks better than five-fingered hands, a study finds.
- Genetics
Genealogy companies could struggle to keep clients’ data from police
Police probably won’t stop searching DNA family trees to find crime suspects. New restrictions on database searches could spur more fights over privacy.
- Life
Some fungi trade phosphorus with plants like savvy stockbrokers
New views show how fungi shift their stores of phosphorus toward more favorable markets where the nutrient is scarce.
- Chemistry
Carbon plays a starring role in the new book ‘Symphony in C’
In Symphony in C, geophysicist Robert Hazen explores carbon’s ancient origins, its role in life and its importance in the modern world.
