There's nothing else like it. Chris Packham reveals the epic, four-billion-year story of our home - from its dramatic creation to the arrival of human life... and whatever's next.
This revealing series follows environmental activist Greta Thunberg as she seeks to raise awareness of the accelerating climate change and spread her message, that we must act to drastically reduce our carbon emissions.
Horizon visits state-of-the-art laboratories and uses CGI to recreate the science-fiction-worthy weather experienced on other planets.
