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Opportunity has reached a 14-mile-wide crater on Mars.
This week, NASA announced that Spirit, one of the twin Mars Exploration Rovers, appears to be permanently stuck in Martian soil, and that the rover would now be used only as a stationary observation platform.
We'll check on the progress of the Mars rover mission. While new data collected by rover Opportunity during its exploration of Victoria Crater was published this week, the Spirit rover appears to be stuck.
In this segment, we'll get the big picture on science on the planet Mars. From orbiting observatories to roving rovers to the ditch-digging Phoenix -- what have planetary scientists learned about Mars, and what remains to be discovered?
Doctor Jordan Metzl says specific cardio and strength training regimens can trea...
Exercise scientists Tamara Hew-Butler and Greg Whyte talk about how the body cha...
Can regular mental exercise help slow down the progress of dementia?
Can exercise help keep aging brains healthy?
New York Times science writer William Broad’s book investigates popular health c...
Think caffeine dehydrates you? Or that you can't get too much water on a hot day? Douglas Casa, of the Korey Stringer Institute, sets the record straight.