Conference considers a global plant steeped in meaning

It is the centerpiece of one of the world’s subtlest rituals. It is swilled by thirsty workers at truck stops and construction sites. It is a pick-me-up and a sign of refinement, a bracing tonic and a sugary treat. It is sold in hawker stalls and high-end shops, often on the same city block. It is, after water, the most popular drink on the planet. It is, of course, tea.

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