· Getting away from it all is easier said than done, as new maps of the world's connectedness reveal.
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Very little of the world's land can now be thought of as inaccessible, according to a new map of connectedness.
The maps are based on a model which calculated how long it would take to travel to the nearest city of 50,000 or more people by land or water.
The model combines information on terrain and access to road, rail and river networks. It also considers how factors like altitude, steepness of terrain and hold-ups like border crossings slow travel.
Plotted onto a map, the results throw up surprises. First, less than 10% of the world's land is more than 48 hours of ground-based travel from the nearest city.
What's more, many areas considered remote and inaccessible are not as far from civilisation as you might think. In the Amazon, for example, extensive river networks and an increasing number of roads mean that only 20% of the land is more than two days from a city - around the same proportion as Canada's Quebec province.
[Source: www.newscientist.com]
The maps are based on a model which calculated how long it would take to travel to the nearest city of 50,000 or more people by land or water.
The model combines information on terrain and access to road, rail and river networks. It also considers how factors like altitude, steepness of terrain and hold-ups like border crossings slow travel.
Plotted onto a map, the results throw up surprises. First, less than 10% of the world's land is more than 48 hours of ground-based travel from the nearest city.
What's more, many areas considered remote and inaccessible are not as far from civilisation as you might think. In the Amazon, for example, extensive river networks and an increasing number of roads mean that only 20% of the land is more than two days from a city - around the same proportion as Canada's Quebec province.
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