April 30, 2009 10:52 pm Bird Poo Facial A spa is using nightingale droppings to cleanse and exfoliate skin. US & World Videos 25:57 Your Health: The truth behind the stomach vacuum trend and biohacking 3:45 What is brain fog? 2:58 Climate change is causing distress, anxiety among young Americans 1:32 How to prevent mosquito bites 2:07 CDC issues new guidelines for IUD pain management