Mapped: How signals travel in a living organism

In a first, researchers have imaged all of the neurons firing in a living organism - revealing how signals travel through the body in real time.

Earth supports one-third less life than estimated

Previous estimates about the total mass of all life on our planet have to be reduced by about one third, according to a study by a German-US science team.

Earth may really be a sort of giant living organism

Researchers have discovered new evidence that may back the famous Gaia hypothesis of Earth as a living organism.