Successful movements also need an organisational model that allows them to keep growing.

I might find myself standing, transfixed, by the roadside, watching a sparrowhawk hunting among the bushes, astonished that other people could ignore it. But they might just as well be wondering how I could have failed to notice the new V6 Pentastar Sahara that just drove past.

Immense wealth translates automatically into immense environmental impacts, regardless of the intentions of those who possess it.

Places that have become agricultural deserts, trashed by giant corporations, could be reforested, drawing carbon dioxide from the air on a vast scale. The ecosystems of land and sea could recover, not just in pockets but across great tracts of the planet.

Everyone can identify with a fragrant garden, with beauty of sunset, with the quiet of nature, with a warm and cozy cottage.

Unless the local community signs up, wildlife won't survive. And without wildlife, no one will visit.

Taking proactive action on climate change is essential to ensuring that Unilever remains a viable business in the future. We will also reap the benefits in innovation, new product development, and cost efficiencies.

Planting native species in our gardens and communities is increasingly important, because indigenous insects, birds and wildlife rely on them. Over thousands, and sometimes millions, of years they have co-evolved to live in local climate and soil conditions.