Urban beekeepers often keep their operations on the downlow for fear of violating local ordinances, but a new adjustable-height hive prototype being tested in Europe could mean sweet success all-around. Meet the “Sky Hive.” The Dutch city Maastricht, population around 120,000, is currently testing out a new system that places beehives on an adjustable stand that beekeepers crank up to the top of a pole nearly 20 feet tall. The bees get to do their thing while staying far above the potentially allergic and freaked-out public.