Editorial
Amazonian Plant Extinctions: What does the future portend? ... and why?

Medieval Warm Period Record of the Week
This issue's Medieval Warm Period Record of the Week comes from Barrow Strait, Canadian Arctic Archipelago.

Subject Index Summary
Health Effects (Temperature - Dengue Fever): Would further global warming expand the range of dengue fever throughout the world?

Journal Reviews
A Century of Global Sea Level Change: So how fast has it been rising?

Tropospheric Humidity and CO2-Induced Global Warming: How are the two related? ... and how important is the answer to the debate over "cap and trade" in the U.S. Senate and the international climate negotiations scheduled to occur later this year in Copenhagen?

How Birds React to Climate Change in a Primeval Temperate Forest: How do they respond to regional warming?

Accelerated Warming Accelerates Skylark Migrations: Where and when has it occurred?

Birds of New York: When the going gets hot, do the hot get going? ... as in polewards in latitude?