Can an astronaut survive a long-term spaceflight?
Who knew that having sex on the beach — or other far-flung tourist destinations — could be so complicated?
Thousands of small quakes rock Iceland amid concerns one of country's volcanoes may erupt.
It's not quite ET, but astronauts have discovered things growing outside the space station.
What will be the main motivation for humanity's future space endeavours?Related story: (See story)
The cost of losing nature