In my front yard, the brown leaves of witch hazel hang on even as the buds are preparing to open into blooms. At Lakewood Forest Preserve near Wauconda, a shingle oak tree stands in the parkway ...

according to researchers at Penn State who found insect damage on fossil leaves from South America that is nearly identical to what is seen today on those trees' living relatives in Australia.

Eucalyptus leaves have shown potential in treating respiratory diseases and alleviating stress. Research indicates that compounds in eucalyptus may help reduce the risk of cancer, diabetes, and ...