Parts of the ceremony involve ritual hair cutting, tying cotton threads soaked in holy water around the couples' wrists, and passing a candle around a circle of happily married and respected couples to bless the union.
Then a student in her lab had a eureka moment: Why not dip cotton fabric in a solution of the nanocrystals to keep bacteria from sticking to the fabric?
Production of corn, cotton, rice, soybeans, and wheat has been largely mechanized, but many high-value, labor-intensive crops, such as strawberries, need labor.
A vaporizer company executive says he agrees that e-cigarettes shouldn't be for young people but critics say flavors like cotton candy and sour gummy worms tempt kids to start vaping.