As news of rising prices, intolerable weather and poor ticket sales have hit the Nevada desert event in recent years, some speculate its days could be numbered.

Pumpkins usually only appear over Halloween. But this drought-tolerant, stable and versatile crop is packed with nutrition. Could it be the superfood of the future?

Madain Saleh isn’t as well-known as Petra, but the Nabateans’ second-largest city played a crucial role in their mysterious empire.

Although not as widely known as the Great Wall, the karez – and its vast maze of underground tunnels – is one of China’s most recognized ancient engineering feats.

Benjamin Zand spent a week in Sudan – a country long-ravaged by terrorism and civil war – to uncover the timeless beauty and rich humanity beneath its fraught exterior.

For millennia, the gum of the acacia tree has been prized for its unusual culinary and medical uses. Now, the trees are part of a continent-wide effort to hold back the Sahara Desert.

Some believe they’re footprints from the gods, others think they’re formed by dancing fairies or UFOs, but no-one can explain these millions of mysterious circles in the desert.

For most of the year, one of the world’s largest salt flats is a vast sea of parched white desert – and then it completely disappears.