All Stories
-
-
- Earth
Tough meteorite made a big impact
The stony meteorite that landed in a remote portion of Peru in September 2007 was traveling abnormally fast when it struck and blasted a crater that was unusually large for the its size, new analyses indicate.
- Chemistry
Obama’s brain trust
Featured blog: Sixty-one Nobel laureates sign a letter explaining why they support Barack Obama's run for the presidency.
- Life
X chromosome is extra diverse
Men who father children with multiple women are responsible for “extra” diversity on the X chromosome, a new study of six different populations suggests.
- Life
Safer creation of stem cells
A new technique for converting adult cells to stem cells avoids dangerous mutations in cell DNA
- Humans
Teaching babies to err
A puzzling error that infants make in a hiding game arises from their inherent tendency to interpret others’ behavior, a research team contends.
- Earth
New contender for Earth’s oldest rocks
Observing rare isotopes in rocks along the Hudson Bay in Northern Quebec suggest the rocks have remained intact for 4.28 billion years, making them Earth's oldest.
- Health & Medicine
The Foreign Drug Trade
Chances are you haven't a clue where your medicines come from.
- Health & Medicine
Window of opportunity for stroke treatment widens
Use of clot-busting drugs as long as 4½ hours after an event pays dividends later.
- Health & Medicine
Cancer data: Burying bad news
Featured blog: Data from the vast majority of human cancer trials never get published, a new study finds — and that's not a good thing.
- Physics
Photons caught in the act
Physicists manipulated a microwave pulse and could essentially watch it transition from a quantum state into the realm of classical physics.
