Climate hotshots in hot seat over private jets and other habits expanding carbon footprint at COP26

An estimated 400 private jets, according to U.K. media, flew into Scotland this week for the U.N.'s high-profile climate-change summit, hustling in Amazon founder Jeff Bezos, Prince Charles, U.K. Prime Minister Boris Johnson and President Biden, among other business-sector, nonprofit and government dignitaries charged with setting ambitious policies to keep a global-warming crisis from worsening.