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Latest David Stahle Stories

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2011-04-04 09:38:14

Trees are outstanding historians -- In fact, scientists dating back to Leonardo da Vinci recognized the value of trees.

2011-02-04 00:59:34

A new, detailed record of rainfall fluctuations in ancient Mexico that spans more than twelve centuries promises to improve our understanding of the role drought played in the rise and fall of pre-Hispanic civilizations.


Word of the Day
ecotone
  • A transitional zone between two communities containing the characteristic species of each.
The word 'ecotone' comes 'eco-' plus a Greek root meaning 'tension'.