A poisonous bacteria has been found in stagnating water and cyanide in the wilted leaves of acacia trees. Deadly Mkauzaan is growing everywhere. Over-browsed trees are loaded with tannin. Are these the combined reasons why the elephants in Bostwana are dying. No! Botswana has been carrying far too many elephants for far too long. The grim reaper summons! The elephants are, quite simply, dying of starvation.