KQED: Roger Coigny has lived in the mountain community of Pinehurst for most of his 75 years. Hes seen a lot of changes, but nothing like the millions of Ponderosa pine trees here in the Southern Sierra Nevada that have died over the past two years.
And the ones that die the quickest are the biggest, most beautiful, tallest and strongest, he says.
The trees are stressed and dying after more than four years of unprecedented levels of drought, plus an infestation of bark beetles.
Last summer,...