Fact check: Is global warming manmade

1. Summary of the results

The scientific consensus on human-caused global warming is overwhelming and well-documented. Between 97-99% of climate scientists agree that human activities, particularly greenhouse gas emissions, are the primary driver of global warming ^{[1] [2]}. Recent studies have even shown this consensus has grown to over 99% among climate scientists ^[3]. The UN's Intergovernmental Panel on Climate Change has determined with "extremely likely" probability (95-100%) that human activities caused most of the global temperature increase between 1951-2010 ^[4].

2. Missing context/alternative viewpoints

Several important contextual points need to be considered:

• Natural variations alone cannot explain the current unprecedented warming rates, which haven't been seen in over 2,000 years ^[3]
• Nearly 200 scientific organizations worldwide have officially stated that climate change is caused by human action ^[5]
• While there have been attempts to challenge this consensus, such as a declaration signed by 1,609 individuals, these have been found to have "very low" credibility by scientific reviewers, as most signatories were not climate scientists ^[5]

3. Potential misinformation/bias in the original statement

The simple question "is global warming manmade" oversimplifies a complex scientific consensus. Several groups have vested interests in this debate:

• Scientific Organizations: Major institutions like NASA, IPCC, and numerous scientific bodies have consistently supported human-caused climate change based on observational evidence ^[4]
• Opposition Groups: Some organizations have attempted to create doubt about the scientific consensus, though their claims have been thoroughly debunked by scientific reviewers ^[5]
• Industries: Fossil fuel companies and related industries have financial interests in questioning the human cause of global warming
• Climate Scientists: The overwhelming majority (97-99%) support the conclusion that global warming is human-caused, based on extensive research and evidence ^{[1] [2]}