Junk Food Science  Lay's Changing Basic Shape of Salt Crystals
for Healthier Potato Chips  The redesigned salt crystal, with
more surface area, should dissolve completely on the tongue,
thus theoretically allowing each chip to taste just as salty
with only 20 percent as much salt.  "There was an opportunity
for our scientists," Pepsico's chief scientific officer Mehmood
Khan said. "If we could figure out a way of getting the salt
crystals to dissolve faster, then we could decrease the amount
of salt we put on a snack with no compromise on taste."  Tags: ,
,  Quantum Tunnelling Robot Skin.  Robots with skin enter our
touchy-feely world One goal of making robots in a humanoid form
is to let them interact closely with people. But that will only
be possible if a robot is fully aware of what its powerful
motorised limbs are in contact with [before destroying the puny
human].  The skin is made up of triangular, flexible printed
circuit boards which act as sensors. Each bendy triangle is 3
centimetres to a side and