We are not resource limited

Here's Professor Mark J. Perry at Carpe Diem on Lawrence Cathles (by way of Mark Levin):

Here's some new support for economist Julian Simon's optimistic view that resource scarcity wouldn't ever be a problem, even with a growing world population, because of the power of innovation, discovery, human ingenuity, entrepreneurship, substitutes, and technological progress to overcome any resource shortages:  the ocean floor might contain reserves of minerals vastly greater than those on land.