Science & Technology  

• Searching for Answers About What Harms Coral Reefs, and What May Protect Them  
• An International Appeal to Cut Smoking Rates Through Six Policies  
• Device Gives New Meaning to the Idea of Power Walking  
• Simple Technology to Get to the Nut of a Problem  
• Fight to End Polio a Story of Unexpected Problems, but Also Progress  
• Have a Headache? You Are Not Alone