It’s the study of evolution and the origin, destiny, and distribution of life in the universe. Relying on the biological sciences, space exploration and space technology, the discipline asks: Where did we come from? Are we alone? What is our future on Earth and in space?
With its ability to create muffled winter landscapes, snow is usually associated with quiet. When it falls on a body of water, one might expect snow to be just as silent.
There are about 5 billion people on the planet now, and human waste has taken its toll on the environment. But ammonia, one of the most common noxious waste products, has a new enemy.
Teams of mindless robots can achieve complex tasks without communicating with each other, say robotics experts in Canada, who were inspired by ants’ behaviour. Armies of such cheap, expendable robots might one day help build a base on Mars — or simply mow your lawn.
The 1996 Nobel Prize in physiology or medicine has been awarded to Australia’s Peter C. Doherty and Switzerland’s Rolf Zinkernagel for their breakthrough insights into the inner workings of the human immune system.