If the forest gets dry enough, air can get into the vessels that carry water through a tree - kind of like an air bubble in a fuel line - and a tree dies.
This phenomenon was not necessarily confined to the Pleistocene, but may have occurred much earlier in the Southeastern Asian islands, although evidence is fragmentary.
The Grand Tourist was typically a young man with a thorough grounding in Greek and Latin literature as well as some leisure time, some means, and some interest in art.
In Europe and Central Asia, the waning of the growth bonus following EU accession and capacity constraints in oil-producing countries are expected to con-tribute to a modest slowing of the expansion.