The search for the oldest sourdough starter spans continents and countries, science labs and libraries, and involves everyone from the Ancient Egyptians to Jesus Christ.
In the 1800s, Livorno boasted Italy's top seaside resorts and most famous guests. These days, it's largely ignored – and tourists are missing out on a vibrant city full of surprises.
A drive down Bolivia's infamous "Death Road" takes travellers into a world where two resources have provoked fascination, misunderstanding and controversy for centuries: coca and gold.
Separated by geography and language, there's not much that might seem to connect India's five dwindling Jewish communities – except praying in Hebrew, and food.