Learn to Identify the Trees of Pennsylvania

With Trees of Pennsylvania by award-winning author and naturalist Stan Tekiela, you can make tree identification simple, informative, and productive. Learn about 117 species found in the state, organized by leaf type and attachment. Just look at a tree’s leaves, then go to the correct section to...

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How Rocks Became Jim Magnuson’s Passion

Jim Magnuson, author of Rockhounding & Prospecting – Upper Midwest, tells us about his fascination with the natural world and how rocks became his passion. Hunting for Greenstone on the Keweenaw Peninsula in Michigan I grew up in a heavily wooded rural setting in northern Illinois...

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