Saffron is the world’s most expensive spice. Usually obtained from the stigma of Crocus sativa flowers, it takes 150,000–200,000 flowers to produce one kilogram of saffron. Now, KAUST researchers have ...

Saffron is the world’s most expensive and elusive spice — and for good reason. Saffron grows in only a few countries around the world and is challenging and expensive to harvest. Its distinct color, ...