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A panel of experts choose an object they feel represents our relationship with nature.

Should half the earth be set aside for wildlife? Monty Don and panel of experts discuss.

Coral reefs are renowned for their beauty and diversity, but what is their future?

The lemurs of Madagascar are the most endangered mammals on earth - how can we help them?

Can we share the planet with migrating birds along the whole of their flight path?

Can we share the planet with wolves, or will we always want to remove them from our lives?

Can we share the planet with orangutans, and how can drones help us?

As east Africa gets hotter and drier will conflict between cattle and wildlife increase?

Are we being short-sighted when it comes to conserving long-lived species?

Can we share the planet with mangrove forest?

Blue whales are increasingly being hit by ships with fatal consequences. What can be done?

Beavers are busy saving us money on flood defences, but is this a good way to view nature?

Can we share the ocean with albatrosses?

Hen harriers are persecuted because they eat grouse. Can a solution be found?

Can insects share the planet with our need for artificial light? Monty Don investigates.

Can we share the planet with big-leaf mahogany, the giants of the tropical forest?

Is plastic litter making the ocean a perilous place for fulmars and other seabirds?

Are we aware we are sharing the planet with less wildlife? Are we getting used to less?

Can dog-walkers share the planet with ground-nesting seabirds?

Monty Don explores the future of the Pantanal and its resident the giant otter.

Monty Don introduces the beluga whale, exploring the future of one particular population.

Monty Don finds out if national parks are good for wildlife.

Monty Don asks if reserves fenced off for the benefit of wildlife are effective.

Monty Don finds out how important urban areas are for the wildlife we share it with.

Monty Don explores the challenges in today's world of pronghorn and wildebeest migrations.

Monty Don learns what is threatening Hector's dolphin, the smallest whale in the world.

Is it worth saving the spix macaw, or could more be done with the same resources?

Monty Don presents the second of two special programmes recorded at the Hay Festival.

Monty Don presents the first of two special programmes recorded at the Hay Festival.

In the first of a new series, Monty Don asks whether we should keep conservation secrets.