From EarthTechling's Pete Danko:Our last foray into kid-hatched alternative-energy projects didn’t end too well (although we’re still big Aidan Dwyer fans), but this one looks puncture-proof. The child this time is 13-year-old Cassandra Lin, who two years ago came up with the idea of collecting used cooking oil in the Westerly, R.I., area where she lives and turning it into heating fuel for people in need.As you might imagine, Lin didn’t actually set up a biodiesel refinery in her backyard.