Earth
- Earth
Toxicologist to Become an NIH Director
A new director — equal parts scientist and communicator — will take over environmental-health agency.
- Earth
Unveiling hidden craters
Earth is regularly bombarded by small meteorites, but most of the resulting craters are hard to find. A team reports finding one such crater in the forests of west-central Alberta.
- Chemistry
Nanosilver disinfects — but at what price?
Silver demonstrates some unusual immunological impacts at the nanoscale.
- Earth
Marine pollution spawns ‘wonky babies’
Featured blog: Pollutants at sea can slow critters' sperm or induce DNA damage.
- Earth
Plate tectonics got an early start
The chemistry of minerals preserved in Australian rocks suggests tectonic activity for Earth’s earliest eon.
- Earth
Antidepressants make for sad fish
Fish may suffer substantially from even brief encounters with antidepressants, which wastewater releases into river water.
- Paleontology
Bacteria may play big role in forming fossils
Bacteria can build a biofilm that preserves a tissue's structure.
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- Earth
Antidepressants Aren’t for Fish
Antidepressants can play potentially dangerous mind games with fish.
- Humans
What an Acid Bath!
One fallout of space shuttle launches can be a transient change in water pH.
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