Some articles on global resurfacing, resurfacing:
... It is hypothesized that Venus underwent some sort of global resurfacing about 300–500 million years ago, though no Venusian rock has ever been dated ... The subsequent resurfacing event covers most or all of the planet with lava, until the mantle is cool enough for the process to start over ... More evidence is needed to put the theory of global resurfacing of Venus on firm ground ...
Famous quotes containing the word global:
“However global I strove to become in my thinking over the past twenty years, my sons kept me rooted to an utterly pedestrian view, intimately involved with the most inspiring and fractious passages in human development. However unconsciously by now, motherhood informs every thought I have, influencing everything I do. More than any other part of my life, being a mother taught me what it means to be human.”
—Mary Kay Blakely (20th century)