Trouble with Lichen

From BBC Radio 4 Extra. Written by John Wyndham; Read by Joanne Tope. Abridged.

Biochemist Diana Brackley and her boss Francis Saxover have discovered that a rare strain of lichen can slow the ageing process.

Idealistic Diana embarks on a lifelong mission to ensure that their discovery will benefit man - and more particularly, woman-kind.

But the trouble with lichen is that there's not enough for everyone...