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Organisms that live at the frigid poles of our planet have evolved strategies to withstand
temperatures that would kill most species instantly. Some secrete ice-nucleating substances that
control the freezing process, for example, while others accumulate anti-freeze proteins that
allow their cells to remain unfrozen even at subzero temperatures, a phenomenon known as
Now, researchers in the Czech Republic have shown that some of these strategies can be
conferred upon species that would otherwise succumb to the cold, like the temperate-adapted
The results, published today (February 13) in the Proceedings of the National Academy of
Sciences, could have implications for tissue storage and cyropreservation strategies for
more complex organisms.
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PODCASTS: Expanding With the Cosmos
Using the Atacama Cosmology Telescope (ATC), a 6.5-meter microwave collector in Chile, cosmologists are piecing together the early history of the known universe. In an exclusive American Scientist interview, Arthur Kosowsky—a member of the ATC team and a professor in the Department of Physics and Astronomy at the University of Pittsburgh—discusses how he is using ATC to reach back in time billions of years to search for gravitational waves that could verify inflation and reveal unprecedented details about how the cosmos was born.
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