News
- Math
Networks reveal concentrated ownership of corporations
Researchers have made the first maps of corporate stock ownership for the stock markets of a large number of countries, 48 in all. The analysis reveals that a few big players constitute backbones of ownership.
-
- Climate
Plumes of arctic haze traced to Russia, Kazakhstan
Smoke from forest fires, agricultural burning may be substantial part of springtime plumes.
- Tech
Two satellites collide in Earth orbit
In an unprecedented collision, two large satellites crashed into each other in low-Earth orbit on February 10.
