So, just how curious are we? And, is curiosity enough?
Those are the questions posed by the announcement by NASA last week that the Mars rover Opportunity discovered evidence that parts of the planet once were covered by water. The news set in motion in the minds of many all those artist and movie portrayals of a prehistoric Earth. By means that are less than fully understood, scientists believe that this planet’s life originated in ancient oceans, evolved and made its way to land. We see the results everywhere.