From biofuels to batterypowered aircraft, the aviation industry is searching for ways to shrink its carbon footprint. At the same time, opposition to private jets has reached a new level of visibility as environmental protesters lobby for stricter regulations and, in some cases, outright bans.
“We have a big target on our backs,” says Erik Lindbergh, chairman of the Lindbergh Foundation and grandson of Charles Lindbergh, the first aviator to fly nonstop across
