It's harvest time in the coca fields of southern Colombia. Using his bare hands, Franklin Canacuan expertly strips the bright green leaves from his 5-foot-tall coca bushes.
Over the years, Colombian police planes have sprayed his fields with a powerful weed killer.
It's part of a government program to destroy coca leaves, which are used to make cocaine. Since it began in 1994, the program has received more than $2 billion in U.S. funding.
Now, due to health concerns, the Colombian government has decided to ground the spray planes.