The other day I left the office around lunchtime and walked over to the Occupy Chicago gathering outside the Board of Trade. At the corner waiting for the light to change, I stood next to a protest drummer who fit the stereotype well: unshorn, unkempt and not much over 20.
Egypt is facing a severe water shortage, which is getting worse as the population grows. Researchers at Alexandria University are developing an innovative desalination process using a membrane that binds with the salt as salt water passes through it. Since no electricity is used, the process requires about half the energy that other desalination methods use. It is hoped that the membrane, consisting of five components, can be mass-produced and used worldwide (Christian Science Monitor, October 28).