After years of deforestation, the Irish are planting trees. They're looking backward for reasons - and forward for answers.

No country capable of growing forests has fewer of them than Ireland. While most countries struggle to manage their existing forests, Ireland struggles to remember when the Emerald Isle was green with trees. The task now is to return trees to land stripped of them centuries ago, and the implications for the island's economic and cultural future are enormous.

For millennia native oak, ash, elm, and birch covered rounded granitic hills and ...

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