Well that didn't take long. In the space of a few days, my two year old has gone from watching the fox scamper past our front door to skipping on subway grates.
Boulder to Brooklyn
In just a few days, my two year old transitioned from watching the fox at our front door to skipping on subway grates.
Newsletter
Sign up for our email newsletter for the latest science news
More on Discover
Stay Curious
SubscribeTo The Magazine
Save up to 40% off the cover price when you subscribe to Discover magazine.
Subscribe












