About half of all active geysers on earth are located in Yellowstone, the oldest national park in the USA. Grand Prismatic Spring does not emit fountains, but impresses with its size and colours. The thermal spring measures about 110 metres in diameter. It owes its orange, yellow and green hues to several types of heat-loving bacteria that live in the water, which is cooler toward the edge.
Seven shades in countless layers make Vinicunca a tourist attraction. The mountain rises 5,200 metres in the Andes in southern Peru. It owes each of the shades of colour to the reaction with air and water of a particular mineral in its soil.
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Calendar Girls
After Molly Baker’s husband died suddenly, her friends organized a year’s worth of support
THE GREAT WILDEBEEST MIGRATION
It's a spectacular sight when countless ruminants cross the Serengeti in search of greener pastures
Soumitra Chatterjee's Tryst with Destiny
The encounter that led a budding actor to a legendary filmmaker, and sparked an iconic creative partnership during the golden age of Bengali cinema
Frozen in Time
The life and work of Vittorio Sella, a pioneer of early mountain photography and the man behind some of the very first images of the Himalayas
HALLUCINATIONS
There was a monkey perched on the IV drip stand to the right of my hospital bed. It scowled at me, but I wasn’t afraid: A brief simian visit was part of my daily routine. I never questioned why there was a monkey in the hospital. I wasn’t lucid enough to recognize that my mind was playing tricks on me.
Music in the Air
Cuba is bursting with sound, and each region moves to its own defining rhythm
SHOULD YOU TRY A DETOX TREATMENT?
It's a popular new-year health habit. But science doesn't support it
Ringing True
He thought his late parents' wedding bands were gone forever
14,000-FOOT MIRACLE
The skydiver fully expected to die when her parachute failed to open. Instead, she's writing the next chapter of her life
I SURVIVED!
THREE UNUSUAL MEDICAL EMERGENCIES, AS TOLD BY THE PEOPLE WHO NEARLY DIED FROM THEM
