The scientists plan to repeat the tests on the mountain (in this case, with a step-stool instead of a treadmill), and then. has been loading his backpack with 35-pound weights and hiking everywhere. JCPS and Google have teamed up to give students in Jefferson County a new set of tools to further their education – a custom ‘digital backpack.’ a Cabela‚Äôs tripod stool. The store is also offering the chance…