A non-profit organization has created 30 clones of a windswept white pine tree in Killbear Provincial Park that has attracted ...

Hidden high in the White Mountains of eastern California, a gnarled, weathered tree quietly holds a staggering secret — it's ...

Lodgepole pine trees being colonized by the damaging bark beetle will send a message of warning by releasing volatile chemical compounds. (Hunter McRae/The Gazette/The Associated Press) ...

The needles of pine trees infected by the mountain pine beetle turn red before the tree dies, as visible on Whistlers Mountain in Jasper National Park on July 12, 2018. Photo by Janet French ...