Laurel Hamers was the general assignment reporter at Science News.
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All Stories by Laurel Hamers
Why the turtle got its shell
Fossil evidence suggests that turtles’ ancestors started to form precursors to today’s shells to help them dig, not to protect themselves.
When mouth microbes pal up, infection ensues
A common and usually harmless species of mouth bacteria can help harmful bacteria become more powerful by providing oxygen.
To zip through water, swordfish reduce drag
A newly discovered oil-producing organ inside the swordfish’s head gives the animal slick skin to swim faster.
Frigate birds fly nonstop for months
The great frigate bird can fly for up to two months without landing, thanks to a boost from wind and clouds.
Health & Medicine
Tight spaces cause spreading cancer cells to divide improperly
Researchers are using rolled-up transparent nanomembranes to mimic tiny blood vessels and study how cancer cells divide in these tight spaces.
Scientists find clue to why mitochondrial DNA comes only from mom
Scientists have identified a protein that chops up the mitochondrial DNA in a dad’s sperm after it fertilizes an egg. The finding helps explain why mitochondrial DNA is usually passed on only by mothers.
Cocaine addicts can’t kick other habits either
Habitual users tend to get stuck in nondrug-related habits more easily, too, pointing to a potential strategy for treatment