Humans
We summarize the week's scientific breakthroughs every Thursday.
- Archaeology
Maya palace suddenly expands
Archaeologists find a sprawling palace and other surprises at a 1,300-year-old Maya site in Guatemala.
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- Health & Medicine
Can poliovirus fix spinal cord damage?
Scientists have devised a version of the poliovirus that can deliver genes to motor neurons without harming them, a step toward a gene therapy that reawakens idle neurons in people with spinal cord damage.
- Archaeology
Ancient Site Holds Cannibalism Clues
An 800-year-old Anasazi site in Colorado yields contested evidence of cannibalism.
- Humans
Cutting edge chemistry rushes online
A new online server offers a place for communicating chemistry research to other scientists quickly and without peer review.
- Humans
Russia’s nuclear-safety issues spread
A leading Russian environmentalist, Aleksandr Nikitin, says Russia's problems with nuclear-waste management should concern people beyond that country's borders.
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- Health & Medicine
Carotid surgery stands test of time
Surgery to remove blockages from the carotid artery in the neck has lasting effects against stroke over several years and even provides some benefit when it's delayed.
- Health & Medicine
Marrow converted into brain cells
Scientists can now efficiently transform bone marrow into nerve cells.
- Health & Medicine
Sperm just say NO to egg cells
Sperm fertilizing an egg produce a whiff of nitric oxide.
- Health & Medicine
Data faked in immune-system study
A researcher fabricated evidence suggesting that never-before-seen RNA-DNA-hybrid molecules play a role in creating antibodies.
- Health & Medicine
Coffee linked to rheumatoid arthritis
People who drink four or more cups of coffee per day appear more likely to get rheumatoid arthritis than are those drinking less.
