Just as Egypt in ancient times was a melting pot for trade, learning and pilgrimage. A recent upsurge in tourism has brought ...

By the year 2100, rising carbon dioxide levels are expected to alter ocean chemistry so severely that coral reef communities in Australia and worldwide will recover more slowly, lose ecological ...

This Caribbean Island Sits Along One of the World's Largest Barrier Reefs—and It Has World-class Snorkeling and Diving Head ...