News
- Planetary Science
A crack at life
New images of ancient cracks on Mars suggest that liquid may have percolated through underground rock on the Red Planet, providing a possible habitat for primitive life.
- Paleontology
Ancient slowpoke
A 1-centimeter-long, 505-million-year-old fossil from British Columbia represents a creature that joins two lineages of marine invertebrates from that era that scientists previously hadn't linked.
- Earth
Equal Opportunity Outcome: Different pollutants show same impact
At concentrations present in the environment, each of three dissimilar toxic agents can seize control of a signaling pathway that regulates developing cells in the central nervous system.
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Natural-Born Addicts: Brain differences may herald drug addiction
Differences in the behavior and the brain receptors of rats seem to predict which of the rodents will become cocaine addicted.
