David Attenborough: 90 and ‘still fighting the good fight’

(CNN) – For Britons stretching back generations, he’s the voice of our planet.

Softly spoken and with reassuring cadence, David Attenborough has guided audiences on many a journey through the natural world.

• CNN

From perilous mountaintops to frozen tundra, tropical rainforest to the watery abyss, there are few places his voice has not carried.

At 90 years old, we’re…

• David Attenborough: 90 and…