News
- Ecosystems
Alien Alert: Shrimpy invader raises big concerns
A shrimplike European invader just discovered in the Great Lakes could prove ecologically disruptive to populations of native lake animals.
- Astronomy
Fleet Finding: Speed of Milky Way’s companions poses puzzle
New measurements of the speed of two familiar companion galaxies to the Milky Way suggest some unfamiliar possibilities.
- Health & Medicine
Folic Acid Dilemma: One vitamin may impair cognition if another is lacking
The nutrient folic acid is generally good for brain health, but research now suggests that too much of it might harm people who get too little vitamin B12.
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Genes discovered for sensing carbon dioxide
Researchers have tracked down a pair of genes that, together, seem responsible for some insects' ability to sense carbon dioxide.
