global warming climate change. the question the question is not whether the average global...
TRANSCRIPT
Global WarmingGlobal Warming
Climate ChangeClimate Change
The QuestionThe Question
The question is NOT whether the The question is NOT whether the average global temperature is going average global temperature is going up.up.
The question is whether or not this The question is whether or not this increase in temperature is due to increase in temperature is due to human activity or if it is a natural human activity or if it is a natural cycle.cycle.
GLOBAL WARMING DUE TO GLOBAL WARMING DUE TO HUMAN ACTIVITYHUMAN ACTIVITY
Many scientists say there is a Many scientists say there is a relationship between COrelationship between CO22 and and temperature.temperature.
GLOBAL WARMING DUE TO GLOBAL WARMING DUE TO HUMAN ACTIVITYHUMAN ACTIVITY
"Global warming is a proven fact and is mostly "Global warming is a proven fact and is mostly caused by emissions from cars and industrial caused by emissions from cars and industrial facilities such as power plants and factories." – facilities such as power plants and factories." – Intergovernmental Panel on Climate ChangeIntergovernmental Panel on Climate Change
According to this summary, the IPCC finds that According to this summary, the IPCC finds that human actions are "very likely" the cause of human actions are "very likely" the cause of global warming, meaning a 90% or greater global warming, meaning a 90% or greater probability. probability.
Since 2007, no scientific body of national or Since 2007, no scientific body of national or international standing has disagreed about the international standing has disagreed about the human impact of global warming. A few human impact of global warming. A few organizations hold non-committal positions.organizations hold non-committal positions.
GLOBAL WARMING DUE TO GLOBAL WARMING DUE TO NATURAL CYCLESNATURAL CYCLES
The science in proving global warming is caused by The science in proving global warming is caused by humans has too many variables.humans has too many variables.
The warming could be caused by solar activity.The warming could be caused by solar activity.
Arctic ice caps grew from 2007-2008.Arctic ice caps grew from 2007-2008.
Water vapor is the only significant greenhouse gas Water vapor is the only significant greenhouse gas (CO(CO22 is “insignificant” in regards to greenhouse is “insignificant” in regards to greenhouse gases).gases).
COCO22 has been increasing for the last 18,000 years has been increasing for the last 18,000 years (long before the industrial revolution).(long before the industrial revolution).
Confused?Confused?
So is everybody else. That is why So is everybody else. That is why this topic is heavily debated.this topic is heavily debated.