love-- [takes a deep breath] ...your sister, saille. [♪♪♪] [♪♪♪] [david bowman] so this is a pencil pined the imprints of their fossils over 100 million years. they grow very slowly, they have very limited capacity to regenerate after fire. this thing might be anywhere between 800-- might even be 1,000 years old, and unfortunately, because of climate change, the next stop is extinction for these things, they're going to become extinct. it's one hell of an emotional journey because your subject matter, motivating you and moving you, is under threat from ecological climate forces and it's being, in some cases, destroyed before your eyes. [thunder crashing and fires roaring] [sirens wailing] we thought we would fence off areas, declare areas wildernesses, and they would be safe-- they're not safe. [chopper rotors beating, fires roaring] this is like wartime. this is-- this is not peace. whatever it is, it's not peace. [♪♪♪] [jan harris] our son had been in the shed and said he could smell smoke, and it was just this-- the wind was just... absolutely terrifying. so they walked around to wher