Leaves are the perfect subject matter for ... The glue resists the chalk and acts like an outline. You can add Fall colors however you like, but we use yellow on the inside, followed by orange ...

Every fall season, nature lovers look forward to scenic fall foliage. But do we know the science behind why leaves do this once the temperatures start dropping? Here's how nature creates art ...

And yellow leaves are caused by xanthophyll, which is also present in bananas and egg yolks. The intensity and the longevity of the autumn colours varies each year, depending on the weather.