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All IPCC definitions taken from Climate Change 2007: The Physical Science Basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, Annex I, Glossary, pp. 941-954. Cambridge University Press.

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The Consensus Project

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	Climate's changed before
	It's the sun
	It's not bad
	There is no consensus
	It's cooling
	Models are unreliable
	Temp record is unreliable
	Animals and plants can adapt
	It hasn't warmed since 1998
	Antarctica is gaining ice
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Skeptical Science iPhone Reports

Here are global warming skeptic arguments ranked by how often they've been reported from the Skeptical Science iPhone app. You can download the iPhone app for free from http://itunes.com/apps/skepticalscience.

Total # of reports submitted: 16441

1	Models are unreliable	15.1%
2	Temp record is unreliable	7.4%
3	Hockey stick is broken	4.8%
4	Climate's changed before	4.4%
5	It's the sun	3.0%
6	There's no empirical evidence	2.8%
7	There is no consensus	2.2%
8	It's cooling	2.2%
9	1934 - hottest year on record	2.1%
10	CO2 limits will harm the economy	2.1%
11	It hasn't warmed since 1998	1.9%
12	It's freaking cold!	1.9%
13	Antarctica is gaining ice	1.6%
14	Medieval Warm Period was warmer	1.5%
15	Renewables can't provide baseload power	1.4%
16	We're heading into an ice age	1.4%
17	Increasing CO2 has little to no effect	1.3%
18	Polar bear numbers are increasing	1.3%
19	Tree-rings diverge from temperature after 1960	1.2%
20	It's not bad	1.2%
21	It's a 1500 year cycle	1.1%
22	Ice age predicted in the 70s	1.1%
23	CO2 is not a pollutant	1.0%
24	Al Gore got it wrong	1.0%
25	It's Urban Heat Island effect	1.0%
26	Animals and plants can adapt	1.0%
27	Climategate CRU emails suggest conspiracy	1.0%
28	CO2 lags temperature	0.9%
29	Was Greenland really green in the past?	0.8%
30	Global warming stopped in ~~1998~~, ~~1995~~, ~~2002~~, ~~2007~~, ~~2010~~, ????	0.8%
31	Volcanoes emit more CO2 than humans	0.8%
32	Climate sensitivity is low	0.8%
33	Phil Jones says no global warming since 1995	0.7%
34	Oceans are cooling	0.7%
35	Ice isn't melting	0.7%
36	Sea level rise predictions are exaggerated	0.7%
37	We're coming out of the Little Ice Age	0.7%
38	It's a natural cycle	0.6%
39	CO2 was higher in the past	0.6%
40	2009-2010 winter saw record cold spells	0.6%
41	IPCC is alarmist	0.6%
42	Human CO2 is a tiny % of CO2 emissions	0.6%
43	It's microsite influences	0.5%
44	Dropped stations introduce warming bias	0.5%
45	The science isn't settled	0.5%
46	IPCC were wrong about Himalayan glaciers	0.5%
47	Greenland ice sheet won't collapse	0.4%
48	Water vapor is the most powerful greenhouse gas	0.4%
49	Glaciers are growing	0.4%
50	Arctic icemelt is a natural cycle	0.4%
51	Record snowfall disproves global warming	0.4%
52	Sea level rise is exaggerated	0.4%
53	Less than half of published scientists endorse global warming	0.4%
54	Humans are too insignificant to affect global climate	0.4%
55	Scientists can't even predict weather	0.4%
56	It's only a few degrees	0.4%
57	CO2 effect is saturated	0.4%
58	Over 31,000 scientists signed the OISM Petition Project	0.3%
59	Greenland is gaining ice	0.3%
60	Solar cycles cause global warming	0.3%
61	CO2 has a short residence time	0.3%
62	Earth hasn't warmed as much as expected	0.3%
63	There's no correlation between CO2 and temperature	0.3%
64	Scientists tried to 'hide the decline' in global temperature	0.3%
65	Hansen's 1988 prediction was wrong	0.3%
66	Other planets are warming	0.3%
67	CO2 only causes 35% of global warming	0.3%
68	Arctic sea ice has recovered	0.3%
69	They changed the name from 'global warming' to 'climate change'	0.3%
70	Mars is warming	0.3%
71	Ocean acidification isn't serious	0.3%
72	500 scientists refute the consensus	0.3%
73	It cooled mid-century	0.3%
74	It's cosmic rays	0.3%
75	CO2 is plant food	0.3%
76	Trenberth can't account for the lack of warming	0.2%
77	Melting ice isn't warming the Arctic	0.2%
78	Warming causes CO2 rise	0.2%
79	Satellite error inflated Great Lakes temperatures	0.2%
80	CO2 is not the only driver of climate	0.2%
81	Peer review process was corrupted	0.2%
82	Murry Salby finds CO2 rise is natural	0.2%
83	The IPCC consensus is phoney	0.2%
84	Greenhouse effect has been falsified	0.2%
85	It's El Niño	0.2%
86	Climate is chaotic and cannot be predicted	0.2%
87	We're heading into cooling	0.2%
88	CRU tampered with temperature data	0.2%
89	The sun is getting hotter	0.2%
90	Mt. Kilimanjaro's ice loss is due to land use	0.2%
91	Naomi Oreskes' study on consensus was flawed	0.2%
92	2nd law of thermodynamics contradicts greenhouse theory	0.2%
93	IPCC overestimate temperature rise	0.2%
94	It's methane	0.2%
95	Lindzen and Choi find low climate sensitivity	0.2%
96	CO2 measurements are suspect	0.2%
97	Solar Cycle Length proves its the sun	0.2%
98	Humidity is falling	0.2%
99	Neptune is warming	0.2%
100	Jupiter is warming	0.1%
101	It's a climate regime shift	0.1%
102	It's albedo	0.1%
103	Extreme weather isn't caused by global warming	0.1%
104	It warmed before 1940 when CO2 was low	0.1%
105	DMI show cooling Arctic	0.1%
106	Scientists retracted claim that sea levels are rising	0.1%
107	It's CFCs	0.1%
108	CO2 was higher in the late Ordovician	0.1%
109	Springs aren't advancing	0.1%
110	Antarctica is too cold to lose ice	0.1%
111	IPCC were wrong about Amazon rainforests	0.1%
112	Hurricanes aren't linked to global warming	0.1%
113	Southern sea ice is increasing	0.1%
114	Roy Spencer finds negative feedback	0.1%
115	Greenland has only lost a tiny fraction of its ice mass	0.1%
116	Positive feedback means runaway warming	0.1%
117	Skeptics were kept out of the IPCC?	0.1%
118	Postma disproved the greenhouse effect	0.1%
119	Record high snow cover was set in winter 2008/2009	0.1%
120	It warmed just as fast in 1860-1880 and 1910-1940	0.1%
121	We didn't have global warming during the Industrial Revolution	0.1%
122	Royal Society embraces skepticism	0.1%
123	Tuvalu sea level isn't rising	0.1%
124	Pluto is warming	0.1%
125	A drop in volcanic activity caused warming	0.1%
126	CO2 is coming from the ocean	0.1%
127	It's aerosols	0.1%
128	Breathing contributes to CO2 buildup	0.1%
129	Ice Sheet losses are overestimated	0.1%
130	It's Pacific Decadal Oscillation	0.1%
131	Most of the last 10,000 years were warmer	0.1%
132	Freedom of Information (FOI) requests were ignored	0.1%
133	There's no tropospheric hot spot	0.1%
134	Water levels correlate with sunspots	0.1%
135	Satellites show no warming in the troposphere	0.1%
136	It's the ocean	0.1%
137	Soares finds lack of correlation between CO2 and temperature	0.1%
138	CO2 is not increasing	0.1%
139	97% consensus on human-caused global warming has been disproven	0.1%
140	Clouds provide negative feedback	0.1%
141	It's ozone	0.1%
142	It's land use	0.1%
143	Mauna Loa is a volcano	0.1%
144	It's waste heat	0.1%
145	Corals are resilient to bleaching	0.1%
146	Arctic sea ice extent was lower in the past	0.1%
147	CERN CLOUD experiment proved cosmic rays are causing global warming	0.0%
148	Arctic sea ice loss is matched by Antarctic sea ice gain	0.0%
149	Sea level fell in 2010	0.0%
150	It's satellite microwave transmissions	0.0%
151	An exponential increase in CO2 will result in a linear increase in temperature	0.0%
152	Sea level is not rising	0.0%
153	Loehle and Scafetta find a 60 year cycle causing global warming	0.0%
154	Water vapor in the stratosphere stopped global warming	0.0%
155	Ljungqvist broke the hockey stick	0.0%
156	Renewable energy investment kills jobs	0.0%
157	No warming in 16 years	0.0%
158	Climate scientists are in it for the money	0.0%
159	CO2 is just a trace gas	0.0%
160	No long tail means climate sensitivity is low	0.0%
161	CO2 emissions do not correlate with CO2 concentration	0.0%
162	Humans survived past climate changes	0.0%
163	Removing all CO2 would make little difference	0.0%
164	The 97% consensus on human-caused global warming is a robust result	0.0%
165	A grand solar minimum could trigger another ice age	0.0%
166	CO2 limits will hurt the poor	0.0%
167	Renewable energy is too expensive	0.0%
168	CO2 increase is natural, not human-caused	0.0%
169	It's not urgent	0.0%
170	IPCC graph showing accelerating trends is misleading	0.0%
171	It's global brightening	0.0%
172	Heatwaves have happened before	0.0%
173	Arctic was warmer in 1940	0.0%
174	Arctic Storm Caused the 2012 Record Sea Ice Minimum	0.0%
175	Climate 'Skeptics' are like Galileo	0.0%
176	CO2 limits will make little difference	0.0%
177	IPCC human-caused global warming attribution confidence is unfounded	0.0%
178	Venus doesn't have a runaway greenhouse effect	0.0%
179	Animal agriculture and eating meat are the biggest causes of global warming	0.0%
180	IPCC ‘disappeared’ the Medieval Warm Period	0.0%
181	It's clouds	0.0%
182	Climate change solutions are too expensive	0.0%
183	It's a climate shift step function caused by natural cycles	0.0%

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