Toiling in Delhi's toxic smog

Delhi is the world's most polluted major city, its toxic cocktail of vehicle fumes, dust and smoke choking the chaotic metropolis and taking years off its 20 million inhabitants' lives.

Emperor penguins' first journey to sea

Emperor penguin chicks hatch into one of Earth's most inhospitable places—the frozen world of Antarctica. Childhood in this environment is harsh and lasts only about five months, when their formerly doting parents leave ...

The 'Chinese Pyramids' and the pole star

The funerary complex of the first Chinese emperor of the Qin dynasty (3 BC) is one of the most famous archaeological sites in the world. This is, of course, due to the discovery of the terracotta statue army, intended to ...

Emperor penguins may shorten record fast by snacking

The endurance of emperor penguins, trudging through the perpetual Antarctic night to their breeding colonies, is legendary. Many trek more than 100 km from their ocean feeding grounds to rookeries at inland locations in preparation ...

What is the difference between active and dormant volcanoes?

Volcanoes are an impressive force of nature. Physically, they dominate the landscape, and have an active role in shaping our planet's geography. When they are actively erupting, they are an extremely dangerous and destructive ...

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