Discovery Channel – Global opvarmning, hvad du skal vide, af Tom Brokaw

Global warming is the rise in the average temperature of Earth’s atmosphere and oceans since the late 19th century and its projected continuation. Since the early 20th century, Earth’s mean surface temperature has increased by about 0.8 °C (1.4 °F), with about two-thirds of the increase occurring since 1980. Warming of the climate system is unequivocal, and scientists are more than 90% certain that it is primarily caused by increasing concentrations of greenhouse gases produced by human activities such as the burning of fossil fuels and deforestation. These findings are recognized by the national science academies of all major industrialized nations. en.wikipedia.org How Global Warming Made Hurricane Sandy Worse www.climatecentral.org Last Time Carbon Dioxide Levels Were This High: 15 Million Years Ago, Scientists Report www.sciencedaily.com Climate Story Of The Year: Extreme Weather From Superstorms To Drought Emerges As Political, Scientific Gamechanger thinkprogress.org Global warming has stopped? Again?? www.youtube.com Visit Discovery for top stories about Planet Earth: dsc.discovery.com Vote @ IMDB www.imdb.com Visit Climate State for up to date climate coverage climatestate.com
Video Rating: 4 / 5