In 1988, Dr Hansen testified before the US Congress, arguing that human induced climate change had begun.
Similarly, one camp maintains that temperatures are rising dramatically with unspeakable portents, while the other thinks what has happened is entirely a result of undefined internal oscillations in the earth-sun climate system, and that there is virtually no human component to climate change.
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No climate agreement will succeed without support from those countries that have so far contributed little to human-induced climate change, have low per-capita emissions, and stand to face the biggest challenges in adapting to the coming changes.
He sides with his father, an eminent climate scientist, in believing that the consensus view of climate change, as set forth by the Intergovernmental Panel on Climate Change (IPCC), understates human influence on the climate.
Human-caused climate change is but one example of what occurs when we fail to do so.
Are you indicating here that there is scientific evidence that there is indeed a human-caused climate crisis?
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CO2 is the greenhouse gas of greatest concern to policy makers looking to stem human-induced climate change.
He's taking 10, 000 photos, one of each person who lives there, to show the world the human face of climate change.
By contrast, human-induced climate change is thought to have raised global temperatures just 0.6 degrees Celsius during the past 150 years.
As in previous years, it heard from researchers whose studies strongly support the idea that human influence on climate is real and growing.
BBC: NEWS | Science/Nature | US science body warns on climate
The AMS has been a bit slower to jump to the conclusion that human-caused climate change is happening than their colleagues in climatology.
In reality, my research is just one piece in a vast puzzle scientists have painstakingly assembled over the past 200 years establishing the reality of human-caused climate change.
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His conclusion is unambiguous: though reducing carbon-dioxide emissions will not end all human influence on climate, it is a necessary step towards reducing the risk of severe dislocation.
Human influence on climate change is not accepted by everyone but most scientists now believe that we are responsible for warming the world through the large amounts of gases released by our industries.
According to Prof Roger Pielke Jnr, from the University of Colorado, there are big dangers in claiming that one event, be it US weather records or wildfires in Australia, are clear evidence of human-induced climate change.
The recent heat wave that has fried much of the country, ruined crops and led to heat-related deaths has again raised the question of whether this and other extreme weather events can be attributed to human-induced climate change.
"To date, climate policy has focused on carbon dioxide primarily, and even to the exclusion of other human influences on the climate system, " the report says.
Remember that despite the current economic climate the human need to belong and be understood is still paramount.
And this brings me to the obvious question: Why is it any different for human-caused global climate change?
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These proposals and analyses do not require you to agree with the compelling scientific evidence that human activity is producing climate change.
In the next few years, GLOBE will be focusing in particular on the goal of enhancing climate education with a focus on global warming, the carbon and energy footprint, climate and human health, and ecosystems, agriculture, and biodiversity.
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Ibana: The adverse effects of climate change on human and non-human populations are irreparable.
As high-resolution data about prehistoric climates accumulates, archeologists are looking for connections between climate change and human development.
Interestingly, there also seems to be some overlap among creationists and those who deny that climate change is human caused.
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Some scientists argue that human activities are irrelevant to climate change, and that attempts to reduce any impact are misconceived.
It is worth noting that the committee included the famously tough Reid Bryson, father of the modern notion that human beings could change the climate.
While Facebook is a concept of the mind that can migrate its human capital to the tax climate it deems best, Continental Resources cannot change the location of the Bakken oil field.
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The focus upon human mortality rates associated with climate change serves to remind us that the far vaster constellation of life species upon which we depend is far more vulnerable than we are.
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Sunday's forum, which will be held at Messiah College in Grantham, Pennsylvania, will allow each candidate to speak for 40 minutes on various moral issues, including poverty, global AIDS, climate change and human rights.
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