News
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Calling out the cell undertakers
Dying cells secrete chemicals that attract other cells that specialize in disposing of cellular corpses.
- Paleontology
Alaska in the ice age: Was it bluegrass country?
At the height of the last ice age, northern portions of Alaska and the Yukon Territory were covered with an arid yet productive grassland that supported an abundance of large grazing mammals, fossils suggest.
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Attack of the cannibalistic bacteria
When nutrients are low, some members of a bacterial species will cannibalize other members.
- Earth
Spawning Trouble: Synthetic estrogen hampers trout fertility
Exposure to a synthetic estrogen called ethynylestradiol, which is commonly found in birth control pills and enters the waterways through sewage effluent, reduces male trout’s fertility by half.
