Tag Archives: Earth Science

How life transformed the planet – Robert Hazen – Aeon

In my post on how similar or dissimilar life might be if evolution started over, I observed that much of the environment that life operates within is itself generated by other life.  It turns out that goes deeper than I … Continue reading

Posted in Zeitgeist | Tagged , , , , , , , , , , | 3 Comments

Perspectives on deep time

The universe is roughly 13.8 billions years old. The universe was 66% of its current age by the time the Sun and Earth formed. Life appears to have begun on Earth when it was around 10% of its current age … Continue reading

Posted in Science | Tagged , , , , , , , , , , | 4 Comments