Uncategorized
- Space
The Milky Way, aglow with activity
Combining infrared and X-ray images from three orbiting observatories, NASA has unveiled a never-before-seen composite portrait of the Milky Way’s bustling center.
- Earth
Asteroid impact could have stirred the ocean
Model offers one explanation for sudden change in deep-ocean chemistry almost 2 billion years ago.
- Anthropology
Macaws bred far from tropics during pre-Columbian times
Colorful birds possibly raised for ceremonial and trade purposes long before Spanish arrival
- Physics
Invisibility Uncloaked
In the race to make things disappear, scientists gain ground on science fiction.
- Life
Hormones give lantern sharks the glow
In a first, a study shows that bioluminescence can be controlled by slow-acting hormones, not rapid-fire nerve cells.
