The study found that climate conditions alone could not explain the amount of tree cover in different areas.

VOA: special.2009.09.01

His newest tree ring samples, from southern Vietnam, enabled him to take the climate record back much further.

VOA: standard.2010.04.05

Using samples from around Southeast Asia, Buckley and his colleagues saw this pattern in tree rings from recent years, when he could corroborate the rings with other historical climate information.

VOA: standard.2010.04.05

Take tree ring-based climate reconstructions in the third IPCC report.

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The tree planting is part of a climate change project between the Welsh and Ugandan governments.

BBC: Welsh support for tree planting project in Uganda

And the idea of anthropogenic climate change rests on a great deal more than just tree-ring records, useful as they are for providing context to the current warming.

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