African elephants can understand some human gestures; a coalition has launched a fund to fight coffee rust; and a new technique could heal your teeth painlessly
來看看非洲象如何能懂得一些人類的手勢，以及設立資金來對抗咖啡葉鏽病的聯盟，還有可望無痛治療牙齒的新技術
Discussion Questions
-Why is it important to know that African elephants understand human gestures?
-Are you concerned about the possible rust crisis in the coffee industry? Why or why not?
-Are you scared of going to the dentist? If it were available to you, would you try the
enhanced remineralization process? Why or why not?
