Fossils provide us with a link to the past. Without them, we might not know that dinosaurs, woolly mammoths and saber-toothed tigers ever roamed the Earth. But how do they form?
Birds aren't exactly deep sleepers, but they do manage to get some shut eye every night.
What makes a lake a lake? Or how about a pond a pond. Technically speaking, nothing.
Get to know a little about our most recognizable snake, the common garter snake.
What makes a hike more than a walk? A natural surface trail certainly helps.
Armadillos aren't normally seen in the northern part of Illinois and, when they are, the Illinois Department of Natural Resources wants to know about it. Same for black bears, cougars and gray wolves.
Not everyone is able to hike along trails to enjoy nature and all it has to offer, so the Forest Preserve has many spots where you can take in the sights from your car or an easy-to-get-to bench.
Learn all about the earthworms crawling just below the surface.
Want to determine the age of a tree without cutting it down? As long as you know what kind of tree it is, all you need is a measuring tape and a calculator.
Turtles have nothing on snails when it comes to creeping along at a snail's pace, and while we may not give much thought to snails and slugs they are quite numerous around the world.
The change links one with Sand Ridge Savanna and assigning the other the name Kankakee Sands.
The Forest Preserve District has launched a redesigned website featuring streamlined navigation, a revamped event calendar, faster performance and an improved mobile experience.