“What’s exceptional about our blue marble is not that we had water. It’s that we held on to it, and that we still do. While the ancient oceans of Venus and Mars vaporized into space, Earth kept its life-giving water.… — Cynthia Barnett Copy Share Image
“What’s exceptional about our blue marble is not that we had water. It’s that we held on to it, and that we still do.… — Cynthia Barnett Copy Share Image
