It rules out the suggestion that the tubules could have been made more recently.

BBC: NEWS | Science/Nature | Early life thrived in lava flows

This is a key piece of evidence which the researchers rely on to show that the tubules are much older than the metamorphism which transformed the Archaean rock.

BBC: NEWS | Science/Nature | Early life thrived in lava flows

Activities included debate competition, painting, skits and tubules.

UNESCO: EDUCATION