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SDG 15 · Life on Land

The world has lost 41 million hectares of forest since 2015.

Eco Heroes turns that fact into a story an 8-year-old can hold onto: Exodus, book 15 of 17 in the SDG Library.

The target, in plain language

What the UN actually promised

Target 15.2

By 2020, promote the implementation of sustainable management of all types of forests, halt deforestation, restore degraded forests and substantially increase afforestation and reforestation globally.

Another passed deadline. Over the past 35 years, the world's forests have shrunk by 203.1 million hectares.

Target 15.5: take urgent action to halt the loss of biodiversity and protect threatened species from extinction. By 2025, 44 per cent of warm-water reef-building corals were at high risk of extinction.

Why it matters

The number behind the story

41M ha
of forest lost since 2015 Part of a 203.1-million-hectare loss over 35 years. And the extinction risk for species keeps rising.

Source: The Sustainable Development Goals Report 2026, UN DESA. Figures as published in July 2026.

The story

Exodus

Exodus, SDG 15 book cover

Exodus

Written by David Fernández Sifres (Premio Barco de Vapor) · Illustrated by Ester García

Book 15 of 17 in the Eco Heroes SDG Library, one illustrated story for each UN Sustainable Development Goal. Unlocked with any Eco Heroes plan (families from €79 a year), and every plan starts with a free month. Published in English, Spanish, French, German, Italian, Portuguese and Catalan.

Bring it into the room

Talk about it, try it

Discuss

One question to ask after reading

“Which wild animal or plant near where you live would you most hate to lose? What does it need to survive?”

Try it: 15 minutes

Ten-square-metre safari

Mark out a small patch of grass, park or schoolyard and count every living thing you can find in 15 minutes. Compare patches: which is richest, and why?

Seventeen goals, seventeen stories

Every SDG gets its own illustrated book, its own facts and its own activities. SDG 1 is always free. The rest unlock with a family, school or hotel plan.

See plans →