What If We Traveled One Billion Years Into the Past?
If you could see all of human history in a single glance, what would you see?
What would you see if you traveled one billion years into the past? Did earth ever look like a giant slush ball? How far back would you have to go to see the first humans? And are we already going extinct? That is where we are in cosmic terms, from the first steps out of the slime to the first steps on the moon, but in that short amount of time we've done quite a bit.
