Chang Posted October 30, 2015 I think the usefulness of humanity will run out long before the planet stops hosting life, and we will be replaced. Â I see no usefulness. 2 Share this post Link to post Share on other sites
Marblehead Posted October 30, 2015 I think the usefulness of humanity will run out long before the planet stops hosting life, and we will be replaced ... by rodents. 1 Share this post Link to post Share on other sites
