Add Yahoo as a preferred source to see more of our stories on Google. A western pine beetle rests on a sap mound on a pine tree. - Charles Wollertz/Getty Images A thriving pine tree is a thing of ...

Add Yahoo as a preferred source to see more of our stories on Google. Nothing says Christmas like a freshly cut tree. Be aware, though, that it could harbour some unwelcome visitors. Ulrich Perrey/dpa ...

According to the Minnesota DNR, Emerald Ash Borer was first discovered in 2009 in Saint Paul. The beetle has now spread to a ...

Invasive beetles might be boring through the valley oaks in your neighborhood. Mediterranean oak borers were first identified in the city of Sacramento last July. They target oaks native to Sacramento ...

SANTA CRUZ — After infested trees were recently discovered near the Tannery Arts Center, the city of Santa Cruz is asking community members to watch out for signs of an invasive beetle that has the ...

Passers-by should savor their last glimpses of the massive, centuries-old valley oak at the corner of Pope Street and Chiles Avenue. The infested tree could be removed any day. Carlos Uribe, an ...

This fallen oak branch in Napa County was infested with Mediterranean oak borers. The beetles are known to make distinct fork-like galleries as shown. Courtesy Curtis Ewing, Cal Fire Invasive beetles ...