In 2009, Karanja Kinyanjui visited the Tea Research Institute in Kangaita and was told about a new purple tea variety that would soon be introduced in the country. The center had 20,000 bushes of ...

Across the picturesque highlands of Kenya's Great Rift Valley, fields of tea shimmer in shades of emerald, lime and moss under the equatorial sky. Some of these fields, though, are now darkened with ...

Schematic diagram of anthocyanin biosynthesis and transport in a purple population of tea plants. The numerical markers represent the expression of the gene in the purple sample, with the green sample ...

Schematic diagram of anthocyanin biosynthesis and transport in a purple population of tea plants. The numerical markers represent the expression of the gene in the purple sample, with the green sample ...

After asking for a cup of “special tea,” the Chalet da Tia Mercês patron is ushered out back to the spigot that protrudes from the wall of the teahouse. Paula Aguiar, who runs the house, fills a clear ...