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. How Global Warming Made Hurricane Sandy Worse Last Time Carbon Dioxide Levels Were This High: 15 Million Years Ago, Scientists Report Climate Story Of The Year: Extreme Weather From Superstorms To Drought Emerges As Political, Scientific Gamechanger Global warming has stopped? Again?? Visit Discovery for top stories about Planet Earth: Vote @ IMDB Visit Climate State for up to date climate coverage
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Præsident Obama i tale: USA skal gøre noget ved klimaforandringerne

Præsident Obama taler nu for, at der skal gøres en større indsats for at beskytte klimaet. Det skete ved afgivelsen af præsidentløften i januar 2013.
“Vi vil reagere på truslen om klimaforandringer, vel vidende at i modsat fald vil vi forråde vores børn og kommende generationer.
Nogle benægter måske stadig videnskabens overvældende dom, men ingen kan undgå de katastrofale følger af hærgende brande, ødelæggende tørker og flere kraftige storme.”

Obama taler om den nødvendige klimaindsats

The path towards sustainable energy sources will be long and sometimes difficult. But America cannot resist this transition, we must lead it. We cannot cede to other nations the technology that will power new jobs and new industries, we must claim its promise. That’s how we will maintain our economic vitality and our national treasure – our forests and waterways, our crop lands and snow-capped peaks. That is how we will preserve our planet, commanded to our care by God. That’s what will lend meaning to the creed our fathers once declared.”

kilde: Strøtanker om bæredygtighed.