The Story of the Most Common Bird in the World

Why do we love what is rare and despise what is all around us?

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Passer domesticus is one of the most common animals in the world. It is found throughout Northern Africa, Europe, the Americas and much of Asia and is almost certainly more abundant than humans.

Even if you don’t know it, you have probably been surrounded by house sparrows your entire life. Passer domesticus is one of the most common animals in the world. It is found throughout Northern Africa, Europe, the Americas and much of Asia and is almost certainly more abundant than humans.

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The Fight to Save the Tiger

The great cat is disappearing throughout its range because of habitat loss and illegal hunting, but an innovative scientist in India may have discovered a way to avert extinction

Tigers are thriving in and around India’s Nagarhole National Park, with a regional population of 250. “If we do everything right, we can have 500,” says big-cat biologist Ullas Karanth.

“It’s a sign saying, ‘I am here! I am here!’ ” says Ullas Karanth as he flails his arms and jumps up and down in a mock attention-grabbing wave.

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How Titanoboa, the 40-Foot-Long Snake, Was Found

In Colombia, the fossil of a gargantuan snake has stunned scientists, forcing them to rethink the nature of prehistoric life

Titanoboa, pictured with a dyrosaur and a turtle, ruled the swampy South American tropics 58 million years ago.

Jason Bourque / University Of Florida

In the lowland tropics of northern Colombia, 60 miles from the Caribbean coast, Cerrejón is an empty, forbidding, seemingly endless horizon of dusty outback, stripped of vegetation and crisscrossed with dirt roads that lead to enormous pits 15 miles in circumference. It is one of the world’s largest coal operations, covering an area larger than Washington, D.C. and employing some 10,000 workers. The multinational corporation that runs the mine, Carbones del Cerrejón Limited, extracted 31.5 million tons of coal last year alone.

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The Interstellar Internet

An interstellar web? (Original image by B. Torrissen)

A speculative but intriguing discussion that sometimes crops up when talking to people engaged in exoplanetary science goes like this; let’s suppose that we find an unmistakably terrestrial style planet around a relatively nearby star (less than about 30 light years away), perhaps even around one of the Alpha Centauri members, a touch over four light-years distant.

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