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Space Travel Too Hazardous for Humans

Astronomy magazine’s March 2006 issue contains a couple of sobering articles for those who like to dream of humans mastering the universe.  Asking “Will moon dust stop NASA?”, Trudy E. Bell described the dangers of space dust: “it sticks to spacesuits, wreaks havoc on equipment, and may be physically harmful,” she wrote, citing the experiences […]

Can Caves Record Climate History?

Many geologists and climatologists have assumed that cave formations, forming slowly over long ages, preserve a record of climate changes.  These assumptions have been challenged by University of Texas researchers who experimented with water dripping from stalactites in a cave in Barbados.  Their work was published in GSA Bulletin.1     Climate history could be […]

These Feet Were Made for Walking (and Running)

We usually walk or run.  When walking, we roll from heel to arch to toe and rock our arms back and forth.  When running, we bounce up and down slightly while pumping our arms.  Did you know that many other gaits are possible?  Why do we use only two?  A team of specialists in bio-robotics […]
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