The quotation from Bert Lenten is from an article in the electronic newsletter Mongabay.com. The quotation from Robert Hepworth
is from the May 13, 2007, edition of the
International Herald Tribune (Europe).
The June 2006 issue of the National Park Service’s magazine
Alaska Park Service
includes a series of photographs showing various Alaskan glaciers at different times, ranging back to the early twentieth
century and continuing to more recent times.
Bill Ford Jr.’s comments about climate change were released with Ford Motor Company’s 2005 climate change report.
In the late 1990s, the oil industry began to acknowledge publicly the possibility that climate change related to greenhouse
gas emissions could be an important environmental problem. Under the leadership of Lord John Browne, British Petroleum (later
officially renamed BP) was the first of the major oil companies to acknowledge climate change as a potentially important issue.
Browne’s announcement came in May 1997 during a speech at Stanford University, where he said, “There is now an effective consensus
among the world’s leading scientists and serious and well informed people outside the scientific community that there is a
discernible human influence on the climate, and a link between the concentration of carbon dioxide and the increase in temperature.”
Browne’s entire climate change speech is available at
www.bp.com/genericarticle.do?categoryId=98&contentId=2000427
.
The Arctic sea ice is changing rapidly. Satellite images or recent summaries based on satellite images should be checked for
current information.
The comments from Sergei Kirpotin and David Viner come from “Thawing Siberian Peat Bog Will Speed Up Global Warming” in the
August 11, 2005,
Moscow News.
Sea ice near shore is often dirty, sometimes because it has been frozen to the sea bottom or the shore and has picked up sediment,
but more often because river floodwaters run over the top of the ice or wind blows sediment or sediment-laden spray from the
open water onto the ice.
BILL STREEVER manages an environmental studies program in Alaska and serves on many related committees, including a climate
change advisory panel. He lives with his partner and son in Anchorage, where he hikes, bikes, camps, scuba dives, and cross-country
skis.