I feel very concerned about the fact bees are disappearing all of a sudden from our developed countries, some advance the theory that the radiation from mobile phones interfere with their navigation system, and they simply dont come back to the hive and die...
Help the bees, build a shelter for them! its very easy, just a batch of hollow branches ( bamboo, elder tree, has to be wood) tied together, closed at one side...put those little houses in a well protected area if possible south facing.
here some pictures