From the Wall Street Journal,

_____

Global-Warming Study Weighs Impact of Human Action

By GAUTAM NAIK

May 15, 2008; Page A10

A new study says humans have changed the world's environment more by warming the climate than by directly encroaching on habitats.

The research, published Wednesday in the journal Nature, also establishes a link between climate change and narrower, continental changes such as the earlier spring flight of butterflies in California, the earlier release of pollen in the Netherlands and the increased growth of pine trees in Mongolia.
_____

An international team of over a dozen scientists, led by Cynthia Rosenzweig of the NASA Goddard Institute for Space Studies and the Center for Climate Systems Research at Columbia University in New York, showed very strong indications based on studies done on a continental scale.

In other news,