SCIENCE IN THE NEWS DAILY
Animals Have Different Patterns of Rest
from the Boston Globe (Registration Required)
We spend a third of our lives doing it. We build special rooms for it, and we agonize over not getting enough of it. Yet despite all the time humans invest in sleep, scientists have still not been able to explain why we need it.
While an array of lab studies show that slumber-deprived people remember less, react more slowly, and even develop higher risks of heart disease and diabetes, the reasons sleep developed in the first place have remained murky—and some even argue that it may not be as useful as we think.
Several scientists are now trying an innovative approach: comparing the snoozing habits of different animals to better understand how sleep evolved over time.
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PODCAST & VIDEO: 3D Printing Replacement Body Parts
Regenerative medicine, a fledgling field with the aim of regrowing parts from a person’s own cells, is being amplified with 3D-printing technology, which can now use organic materials to create scaffolds that cells need to grow into their final forms. Richard Wysk, a professor of industrial and systems engineering at North Carolina State University, discusses the latest successes with this research, and the timeline for creating more complicated structures.
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