Invisible Machines

Wouldn’t it be great if tiny robots could patrol our cells and warn us of potential diseases even before the symptoms appeared? Nanotechnology is already a reality today—and it’s only starting to stretch the bounds of our imagination.

Asteroids: The Threat Coming from Space

Every year, tens of thousands of meteorites fall toward Earth. Most of them are very small, about the size of a stone, and end up disintegrating in the atmosphere. But occasionally, these asteroids can have slightly more worrying dimensions, even reaching a few kilometers long. When a this happens, huge blasts leave enormous craters on the Earth’s surface. The most famous example contributed to the demise of the dinosaurs 65 million years ago. Today, however, we are not out of danger. Indeed, a large asteroid hasrecently been detected, and it’s moving towards us…