Keyword Science Knowledge

David Attenborough and scientist Johan Rockström examine Earth's biodiversity collapse and how this crisis can still be averted.

The first American space station Skylab is found in pieces scattered in Western Australia. Putting these pieces back together and re-tracing the Skylab program back to its very conception reveals the cornerstone of human space exploration.

Just outside Paris, France, inside a high-tech vault, requiring three independently controlled keys, rests a small metallic cylinder about the diameter of a golf ball. Encased within three vacuum-sealed bell jars it may not look like much, but it is one of the most important objects on the planet. It affects nearly every aspect of our lives from the moment we are born, to the food we eat, the cars we drive, and even the medicines we take. The Last Artifact follows the high-stakes race to redefine the weight of the world reveals the untold story of one of the most important objects on the planet. The kilogram, the base unit of mass in the International System of Units, helped send humans to the moon and satellites into space. This small hunk of metal is the object against which all others are measured. Yet over time, its mass mysteriously eroded by the weight of an eyelash. A change that, unbeknownst to most, unleashed a crisis with potentially dire consequences.

It is a daring idea: to grow food from old mattresses in a desolate camp at the edge of a war zone. When a refugee scientist meets two quirky professors, they must confront their own catastrophes - and make a garden grow. Short film now streaming on Waterbear.com.

Exploring the vital role colour plays in the daily lives of many species.