A scientific definition of climate change
Carbon dioxide, methane, and nitrous oxide are greenhouse gases that occur naturally in the atmosphere, but their concentrations have increased dramatically since the industrial revolution. The main cause of the increase in carbon dioxide in the atmosphere is the use of coal, oil and gas in transport and to produce electricity, together with land-clearing and deforestation. Methane and nitrous oxide increases are mainly due to agriculture. Most climate scientists now agree that increasing greenhouse gases in the atmosphere have contributed to global-scale climate change, causing warmer temperatures, retreat of glaciers, reduction of snow cover and impacts on plants and animals.
check on the websites of
submarines, hydrofoils, hovercrafts, ALVIN, ALVEEN, Woodshole Oceanographic Institute
BBC The Planet Earth 5 DVDs avaiable through AMAZON.com
National Geographic Institute