In Daniel Mottola's story about HelioVolt coming to Austin [“Solar Celebrity HelioVolt Lands in Austin
,” News, Feb. 8], he said that one of HelioVolt's big advantages is that their new thin-film solar-power technology "doesn't rely on increasingly scarce silicon," as most current solar panels do. Silicon is far from being scarce; it is the second most abundant element in the Earth's crust (after oxygen) and constitutes about 25% of everything around us. Rocks, sand, you name it, they're mostly made of silicon. I'm delighted that HelioVolt is coming to Austin, but the idea that anyone is shifting to copper-indium-gallium-selenide solar panels because silicon is becoming scarce is just absurd.