News
- Animals
Chicks open wide, ultraviolet mouths
The first analysis of what the mouths of begging birds look like in the ultraviolet spectrum reveals a dramatic display that birds can see but people can't.
- Physics
Answer blows in wind, swirls in soap
A swirling soap film gives new clues to how turbulent flows, such as the circulation of Earth's atmosphere, squander their energy.
- Astronomy
Telescope takes close-ups of distant star
Radio astronomers have for the first time probed ejected gas in the immediate surroundings of a distant star.
- Paleontology
Feathered fossil still stirs debate
More than 2 years after scientists first described 120-million-year-old fossils of a feathered animal, a new analysis seems to bolster the view that the turkey-size species was a bird has-been and not a bird wanna-be.
