Why do some trees have leaves, while others produce needles? This beginner's guide introduces needles and scaly and flat leaves to help you understand their identifying factors. With this information, ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. DENVER — As you travel around Colorado to ...

Steve Nix is a member of the Society of American Foresters and a former forest resources analyst for the state of Alabama. Trees are among the earth's most useful and beautiful products of nature.