Scientists sniff out Thailand's first truffle species

Gastronomes of the world delight. Two new types of truffle have been unearthed in Thailand's far north, scientists announced Thursday in what they called a first for Southeast Asia.

Citrus: From luxury item to cash crop

New research from Tel Aviv University reveals that citrons and lemons were clear status symbols for the ancient Roman ruling elite and plots the route and evolution of the citrus trade in the ancient Mediterranean.

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