News
- Paleontology
Bumpy Bones: Fossil hints that dinosaur had feathery forearms
A series of knobs on the forearm bone of a 1.5-meter-long velociraptor provides the first direct evidence of substantial feathers on a dinosaur of that size.
- Planetary Science
Muddying the Water? Orbiter drains confidence from fluid story of Mars
New images of Mars diminish the evidence that liquid water has flowed on some parts of the planet, but bolster the case in other places.
- Chemistry
Nanotherapy: Gold-drug combo could target tumors
Clusters of paclitaxel molecules attached to gold nanoparticles could deliver a safer and more effective chemotherapy punch to tumors.
- Animals
Hybrid Power: Salamander invader ups survival of rare cousin
Mixed offspring of the endangered California tiger salamander and an invasive cousin survive better than either pure-bred species, raising tricky questions for conservationists.
