Goo Lets Turtle Moms Pause Eggs’ Growth

Goo Lets Turtle Moms Pause Eggs' GrowthPregnant turtles hit the pause button on their eggs' development until the time is just right to lay them in a nest, researchers say. The careful moms do this by producing a gooey substance in their reproductive tracts that cuts oxygen to the embryos, a study shows.


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Women with No Fear Feel Panic in Experiments

Three women with an extremely rare type of brain damage had never felt fear in their adult lives. Snakes and scary movies didn’t do it for them. In fact, they couldn’t even recognize a fearful expression on someone else’s face. But when given a hit of carbon dioxide that made them feel like they couldn’t breathe, the women experienced something surprising and novel: They were panicked.

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