4. Bölüm: 4. Bölüm

Bölüm Konusu

Isobel Yeung reports on the doctors and researchers who are making incredible strides in the fight against blindness. Hamilton Morris travels to California's infamous Emerald Triangle to meet struggling mom-and-pop growers, and visits with the investors and entrepreneurs eager to cash in on the next big consumer market--even if it could put the small guys out of business.