How Venus and Mars can teach us about Earth

One has a thick poisonous atmosphere, one has hardly any atmosphere at all, and one is just right for life to flourish – but it wasn't always that way. The atmospheres of our two neighbours Venus and Mars can teach us a ...

The only way is down: subterranean survival warning

Solutions to the biggest threats facing our planet lie underground, according to experts who insist climate change, overpopulation and food shortages can all be tackled by going subterranean.

Image: BioRock and roll

This fluorescent work of art captures the beauty of biofilms, or the growth of microbes on rocks. In this microscopic image, Sphingomonas desiccabilis is growing on basalt.

Prolonged spaceflight could weaken astronauts' immune systems

NASA hopes to send humans to Mars by 2030 on a round-trip mission that could take up to three years—far longer than any human has ever traveled in space. Such long-term spaceflights could adversely affect certain cells ...

Russian, American ready for a year in space

The Russian astronaut heading off for a year in space says he'll miss the natural landscapes on Earth. His American counterpart jokes he won't miss his twin brother.

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