A Sumatran tiger killed the female he was meant to mate with. Mating endangered species in captivity has long been a problem, if not always to such dramatic effect.

Forty-one years after its launch, Voyager 2 has officially crossed out of the solar system and into interstellar space. What has it discovered along the way?

According to current scientific theories, dark matter and dark energy make up most of the universe. But we don't even know what they actually are.

An original essay about the science of the future by the late theoretical physicist.

In the rural Indian province of Bihar, Husk Power Systems is converting leftover rice husks into biofuel. Now they're building mini-power plants around the country, and expanding into Tanzania.

It’s not easy to measure a mountain. Mount Everest's height has been known since the middle of the nineteenth century, but how did they figure it out with no altimeters or GPS?

Kelp, yeast, and sequestered methane gas are on the forefront of the move to create environmentally friendly clothing

A new drug-resistant malaria strain is spreading in South-East Asia. Farmers may be using fewer anti-biotics. Engineers are studying national disasters.

The study of wingbeat has come an incredibly long way and could lead to breakthroughs crucial for human populations facing insect-borne disease and pests.

What exactly are the Ig Nobels? And what can we learn from the Journal of Irreproducible Results and the Annals of Improbable Results?