There are lots of great things to love about fall. There’s cooler weather, apple picking, Halloween… but arguably one of the best things is the natural art show that deciduous forests put on. Every fall these forests turn from their typical green to vibrant hues of red, orange, and yellow. It’s a spectacular site to see and one that people travel miles to visit (in Vermont we call them leaf peepers). But what’s the story behind this beautiful show of color, and why don’t all trees do it? As always, there’s some pretty cool science happening behind the scenes.
If you live in a rural area, or near a park, you’ve probably observed this unique squirrel behavior. When the weather catches a chill, these bushy-tailed creatures begin what looks like preparation for a wide-scale scavenger hunt. In great numbers, these squirrels begin to bury nuts! Squirrels hide nuts this way as preparation for cold weather when otherwise food will be scarce. This kind of proactive stashing raises a lot of questions for squirrel enthusiasts—the most pressing being how do the squirrels find their nuts again?