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Insects

Mary Colwell meets a doctor who has a passion for creepy crawlies.

Water Voles

Mary Colwell meets a water vole warrior determined to save them from disappearing.

Corals

Mary Colwell meets a man who has spent his life searching for corals on the Devon coast.

Mosses

Mary Colwell meets a man whose life revolves around tiny green plants.

Seals

Mary meets grey seal expert Sue Sayer in Cornwall to observe the animals.

Microbes

Writer and naturalist Paul Evans meets Prof Lynn Margulis.

Loons

Paul Evans goes to Maine to meet a conservation biologist who has spent a life with loons.

Ospreys

Paul Evans meets Roy Dennis, who has spent a life with ospreys, in the Scottish Highlands.

Bears

Bear guide Derek Stonorov believes grizzly bears are not as fearsome as many people think.

Salmon

A couple who study the spawning grounds of the world's last great salmon run.

Tundra

Grant Sonnex talks to Pete Abraham, a Yupik Eskimo who grew up in a tiny settlement.