News
- Health & Medicine
Sleight of Herb: Black cohosh mislabeled in medicinal products
A sizable fraction of the herbal supplements marketed as preparations of black cohosh contains none of that North American plant.
- Earth
Blast Survivors: Fragments of asteroid found in ancient crater
Pieces of an asteroid that blasted a 70-kilometer-wide crater in southern Africa millions of years ago may have been found intact inside the thick layer of once-molten rock that the impact left behind.
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Sharing the Health: Cells from unusual mice make others cancerfree
Immune-cell transplants from an extraordinary strain of mice that resists cancer can pass this trait to mice that aren't as lucky.
- Tech
Speed Bump: Tip’s tricks sort DNA, write at nanoscale
An atomic-force microscope tip has been transformed into a microinstrument for sorting DNA and depositing nanostructures by means of cleverly applied voltages that propel molecules along the tip's surface.
- Humans
Legal Debate: Assumptions on medical malpractice called into question
The notion that many medical-practice lawsuits are frivolous and intended to generate undeserved riches for their plaintiffs and lawyers isn't borne out in a new study.
- Anthropology
Making sacrifices in Stone Age societies
A half-dozen burials at sites in Europe and western Asia dating to between 27,000 and 23,000 years ago provide clues to possible human sacrifices.
- Anthropology
Digging up debate in a French cave
A scientific debate has broken out over whether a French cave excavated more than 50 years ago contains evidence of separate Stone Age occupations by Neandertals and modern humans.
- Anthropology
Neandertals take out their small blades
Excavations of Neandertal artifacts have yielded a trove of thin, double-edged stone blades that researchers usually regard as the work of Stone Age people who lived much later.
- Anthropology
Ancient islanders get a leg up
A new analysis of bones from a tiny evolutionary cousin of people found on a Pacific island indicates that these late Stone Age individuals carried a lot of weight on short frames and had extremely strong legs.
- Health & Medicine
An aging protein?
The defective protein that, when defective, causes a premature-aging disease may also play a role in normal aging.
- Astronomy
Crust on a star
By analyzing X rays generated by the rumblings of a neutron star 40,000 light-years from Earth, astronomers have estimated the thickness of the dense star's crust.
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Blood Sucker: Like the adult heart, the developing heart takes advantage of suction
The embryonic heart works more like the adult heart than scientists had long assumed.
