Life
We summarize the week's scientific breakthroughs every Thursday.
- Life
Sun-oil mix deadly for young herring
Fish embryos proved surprisingly vulnerable to a 2007 spill in San Francisco Bay.
- Humans
Bt: The lesson not learned
The more things change, the more they stay the same, as a Dec. 29 Associated Press report on genetically engineered corn notes. Like déjà vu, this news story on emerging resistance to Bt toxin — a fabulously effective and popular insecticide to protect corn — brings to mind articles I encountered over the weekend while flipping through historic issues of Science News. More than a half-century ago, our magazine chronicled, real time, the emergence of resistance to DDT, the golden child of pest controllers worldwide. Now much the same thing is happening again with Bt, its contemporary agricultural counterpart. Will we never learn?
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- Life
Staggered lessons may work better
Training at irregular intervals improves learning in sea snails.
- Paleontology
Early animals dethroned
Cell division patterns in controversial Chinese fossils place them outside the animal kingdom.
- Ecosystems
Groundwater dropping globally
Nine-year record collected from orbit finds supply dropping mostly due to agriculture.
- Life
Pigeons rival primates in number task
Trained on one-two-three, the birds can apply the rule of numerical order to such lofty figures as five and nine.
- Life
Drugs activate dormant gene
A compound that blocks DNA unwinding can spur production of a critical brain protein in mice, leading to hope for a therapy for Angelman syndrome.
- Life
BPA sends false signals to female hearts
The ingredient of some plastics and food packaging can interfere with cardiac rhythm at surprisingly low concentrations.
- Life
The electric mole rat acid test
Naked mole rats don’t feel the burn of acid thanks to tweaks in a protein involved in sending pain messages to the brain.
- Humans
Uncommitted newbies can foil forceful few
Decisions more democratic when individuals with no preset preference join a group.
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