News
- Life
Slow sperm may fail at crashing ‘gates’ on their way to an egg
A new study describes how sperm navigate narrow straits in the reproductive tract’s obstacle course to reach an egg.
- Planetary Science
After 15 years on Mars, it’s the end of the road for Opportunity
After 15 years of exploring Mars, a dust storm led to the demise of NASA’s longest-lived rover.
- Quantum Physics
Photons reveal a weird effect called the quantum pigeonhole paradox
Quantum particles seem to disobey a fundamental principle of mathematics.
- Health & Medicine
Congo’s Ebola outbreak is a testing ground for new treatments
The first multidrug clinical trial of Ebola treatments is underway amid an outbreak in Congo.
- Archaeology
The spread of Europe’s giant stone monuments may trace back to one region
Megaliths spread across the continent due to seafarers’ influence, researcher says.
- Climate
An Antarctic expedition will search for what lived under the Larsen C ice shelf
The fourth attempt to investigate the seafloor once hidden by the Larsen C iceberg may have the best chance yet of success.
- Neuroscience
Brain scans decode an elusive signature of consciousness
Newly described patterns of brain activity may help reveal the level of awareness in people with brain injuries.
- Genetics
DNA reveals early mating between Asian herders and European farmers
A new genetic analysis could upend assumptions about the origins of Indo-European languages.
- Life
Evolutionarily, grandmas are good for grandkids — up to a point
Women may live past their reproductive years because they help their grandchildren survive, but there are limits to that benefit.
- Climate
2018 was the fourth-hottest year on record, and it’s getting even hotter
Record-level rains and temperatures struck different regions of the world in 2018, the fourth warmest year on record.
- Climate
Collapsing ice cliffs may not contribute to sea level rise
Scientists debate a controversial hypothesis that suggests that massive crumbling ice cliffs could speed up future sea level rise.
- Health & Medicine
Why some children may get strep throat more often than others
Kids with recurrent strep throat appear to have a defective immune response to the bacteria that cause the infections, a study finds.
