“And when worlds collide, said George Pal to his bride – I’m gonna give you some terrible thrils…” A wobble in the solar system may bring Earth and Mars smashing together. You have 3 billion years to hitchhike to the nearest Vogon ship. Start your electronic thumbs now… The future is now, circa 1957. Tilting at windmills, sans wind… How dying winds may undermine renewable energy efforts. Perhaps the solution to the energy crisis lies in virtual power plants? That and