Fluoride is a mineral that helps protect teeth from decay, and the key question about any toothpaste is whether it contains fluoride. Products marketed as natural, herbal or organic often include plant ingredients such as aloe vera, neem or green tea, and some include fluoride while others leave it out. Plant ingredients alone can't replace fluoride's proven protection, and words on the front of the tube say nothing about whether a toothpaste will prevent cavities. Check the ingredients list for fluoride before switching.

Hampi is a UNESCO World Heritage Site in Karnataka, India, with more than 1,600 surviving remains spread over 4,100 hectares. It was the capital of the Vijayanagara Empire from 1336 to 1565. Travellers from Persia and Portugal described it as a prosperous, wealthy and grand city with temples, markets and farms along the Tungabhadra River. By 1500 it was estimated to be the world's second-largest city after Beijing, and probably India's richest at the time. In 1565 a coalition of Muslim sultanates defeated the Vijayanagara Empire, its capital was conquered and destroyed, and the city was left in ruins. Hampi remains a religious centre, with the active Virupaksha Temple at its heart.