Rats!

The CTA is planning to deploy birth control in its war against rats, and it’s easy to see why: In just one year, up to 15,000 descendants can be traced to a single rat. Use the slider below for a visual presentation of what that growth looks like. —Luke Seemann

Week 1 Week 52

Week 1

Total rats: 1

Original rat 1 Pups 0 Grandpups 0 Grand-grandpups 0 Grand-grand-grandpups 0 Grand-grand-grand-grandpups 0