David Attenborough documentaries — think projects such as "Life in Colour" and "Our Planet" — are universally beloved for their soothing, observational narrations over lush wildlife footage, but "David Attenborough: A Life on Our Planet" is a project with a more urgent plea regarding the imminent dangers of climate change. This intimate documentary paints a portrait of the broadcaster's larger-than-life career and ties it into the broader world of evolutionary history. Attenborough mourns the rapid destruction of the natural world while also offering insights into how humanity can potentially counter climate change with concrete actions.