Am I the only one who has realized, that all you startup people are scared of science? Are the ideas on the list really that hard to fund? We have some very real problems in this world, but all you seem to care are iPhone/Android apps and stupid websites (copied from one another I guess).
One thing software people always forget is how expensive it is to perform R&D on real, physical things. Software is practically free to produce in comparison - your big campus of 1000 engineers, with free lunch and masseuses, is practically free in comparison to say, the cost of developing a new drug, or introducing a revolutionary new jet engine.
I don't think it's necessarily true that VCs only care about iPhone/Android apps, but they honestly cannot afford to invest in "real" engineering. The risks are just as great, and the stakes are far, far higher, beyond the deep pockets of many angels and VCs.