Here’s what Earth was like last time CO2 was this high

Last time there was this much CO2 in the atmosphere was 3 million years ago, in the Pliocene era. What can that tell us about what we're in for?

• The world will probably keep warming.
• Sea levels will probably keep rising.
• Ice sheets will probably keep melting.
• Saber-tooth tigers? NOT OUT OF THE QUESTION.
• Okay, probably out of the question.