Our final soundscape, a full playout of the Forest 404 theme tune, composed by Bonobo. The track samples the whistling bird from the Sumatran rainforest recording that kick-starts Pan’s journey. Headphones are best. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

A love letter to the forests of the world. Written by David Haskell, read by Pearl Mackie. The first forests grew 400 million years ago. Time enough for them to have listened to this world and discovered how to bring about new life. Produced by Eliza Lomas and Becky Ripley. And don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

Daria escorts Pan to The Convocation. An era has ended. Can, or should, a new one begin? An environmental thriller starring Pearl Mackie, Tanya Moodie & Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest #Forest404

A soundscape for Episode 8. Theia’s half-remembered memory of her daughter humming by the sea's edge, used by Guggy for the brain transfer. Wind howls, thunder cracks, gulls call overhead. Headphones are best. With sound design by Graham Wild and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

A talk for episode 8, an ode to Theia. Anthropologist Michael Rivera on our evolutionary history compared to other less successful species who became extinct. Are we heading in the same direction? Produced by Eliza Lomas and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

Pan and Theia have a plan, but it’s a sketchy one and it’s probably going to go wrong. An environmental thriller starring Pearl Mackie, Tanya Moodie & Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest #Forest404

A soundscape for Episode 7. A full playout of one of Daria’s nightmares. Flesh and feather aberrations, horrific chirruping little fluff balls laughing through tiny keratin megaphones. Headphones are best. With sound design by Graham Wild and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

A talk for Episode 7. Biofuturist and sci-fi writer Elsa Sotiriadis on whether AI would run the country better than us humans. Produced by Eliza Lomas and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

Daria has a confession to make – a secret from her past that haunts her every night. An environmental thriller starring Pearl Mackie, Tanya Moodie & Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest #Forest404

A soundscape for Episode 6. A full playout of Pan’s dwindling as her system shuts down. Cicadas accelerate into oblivion, whales call from the deep, birds morph into monkeys, waves crash into white noise. Headphones are best. With sound design by Graham Wild and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest 404

Cemetery Historian Katie Thornton on what happens to our digital selves when we die. Where are the cemeteries for our digital ghosts and who's looking after them? Produced by Eliza Lomas and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

In fear of seeing another civilisation self-destruct, Theia uncovers the truth behind Pan’s journey. An environmental thriller starring Pearl Mackie, Tanya Moodie & Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest #Forest404

A soundscape for Episode 5. A walk through Theia’s hometown, the streets of St Petersburg. Headphones are best. With sound design by Graham Wild and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

A talk for Episode 5. Bioethicist Andy Miah on what cyborgs today can tell us about humanity’s future. Will genetic modification and life extension technology cause more or less social equality? Produced by Eliza Lomas and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

Theia tells Pan the story of how the old world came to an end. An environmental thriller starring Pearl Mackie, Tanya Moodie & Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest #Forest404

A soundscape for Episode 4. A British woodland thick with birdsong; blackbirds, larks, dunnocks, wood pigeons. The rustle of leaves and the distant bleat of sheep. Headphones are best. With sound design by Graham Wild and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

A talk to go with Episode 4, when Pan sees her first ever tree. Forest canopy cameraman and expert tree-climber James Aldred explains how trees can stay alive for centuries. Produced by Eliza Lomas and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

Daria and The Hands close in on Pan as they race towards the oil lake. An environmental thriller starring Pearl Mackie, Tanya Moodie & Pippa Haywood. With theme music by Bonobo. Written by Timothy X Atack and directed by Becky Ripley. Each episode comes with its own talk and soundscape. And you can take part in our interactive experiment to see how you respond to sounds of nature at: bbc.co.uk/forest #Forest404

A soundscape for Episode 3. A full playout of the whale song that sent Pan to sleep. A watery montage of humpback, orca, bowhead and blue whales. Headphones are best. With sound design by Graham Wild and Becky Ripley. Don’t forget to take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404

A talk to go with Episode 3. Now that Pan is down in The Inner, chronobiologist Herman Wijnen talks through what happens to our minds and bodies without sunlight. Produced by Eliza Lomas and Becky Ripley. You can also take part in our Forest 404 Experiment to see how you respond to natural sounds at: bbc.co.uk/forest #Forest404