Wallace's emotions on discovering such marvels must surely be echoed by all of us who follow him. This is what he wrote: "I thought of the long ages … - David Attenborough

And this is where it went. In places all around the eastern Mediterranean the sea is separated from the mainland by strips of flat marshy land like this. Made up of the soil that once clothed the hills beyond. All this was deposited during the last 2000 years. This is the marsh that now separates the sea from the city of Ephesus. These ruined buildings mark the edge of the quay where once merchant ships lay moored. As the harbour died, so did the trade upon which the city's wealth was based, and so, well, ultimately did Ephesus itself. What was once one of the most splendid cities in the Roman Empire fell into decay and was abandoned.

The island is immense. It's 1,000 miles long, if you discount a narrow arm of sea that crosses it in the middle, and it contains mountains over 12,000 feet high. It's New Zealand. The first land-living mammals to get here were human beings and they didn't arrive until a mere 1,500 years ago. So here you can glimpse what the world would have been like if the birds had won that battle with the early mammals and now ruled the Earth, for here they once did.

We are going to have to live more economically than we do. And we can do that and, I believe we will do it more happily, not less happily. And that the excesses the capitalist system has brought us, have got to be curbed somehow.