The last time I read a number like this it was in the mid 30's for the energy blowing in the wind. Anyway, I like to see several studies from different groups that have similar findings. It really solidifies the amount of energy available through wind power is plenty for our needs if we can harness it.

From this new study: "...a network of land-based 2.5-megawatt (MW) turbines restricted to nonforested, ice-free, nonurban areas operating at as little as 20% of their rated capacity could supply >40 times current worldwide consumption of electricity, >5 times total global use of energy in all forms."

The study comes from the National Academy of Sciences.