Meaning: The quote you provided is a statement by Grant Miles, in which he expresses skepticism about the current exceptional global warming as stated by the Intergovernmental Panel on Climate Change (IPCC). The quote also suggests that the IPCC is no longer fulfilling its role as an investigative scientific organization. This statement reflects a viewpoint that challenges the scientific consensus on climate change and raises questions about the credibility of the IPCC's findings.

To provide some context, the IPCC is a United Nations body responsible for assessing the science related to climate change, its impacts, and potential adaptation and mitigation strategies. It was established in 1988 and has since become a prominent authority on climate science, producing comprehensive assessments of the state of knowledge on climate change and its implications for policymakers.

The IPCC's assessments are based on the work of thousands of scientists from around the world who contribute to the organization's reports. These reports undergo extensive review by experts and governments to ensure their accuracy and reliability. The IPCC's findings and conclusions are widely regarded as the most authoritative and comprehensive summaries of climate science available.

Grant Miles' statement challenges the credibility of the IPCC's conclusions on global warming. It is important to note that the overwhelming majority of climate scientists agree that the Earth's climate is undergoing unprecedented changes due to human activities, particularly the release of greenhouse gases such as carbon dioxide from the burning of fossil fuels. Multiple lines of evidence, including temperature records, melting ice caps, rising sea levels, and changes in weather patterns, support the conclusion that the planet is warming at an accelerated rate.

Miles' assertion that there is "no credible evidence" of exceptional global warming contradicts the extensive body of scientific research and data that supports the reality of climate change. However, it is essential to recognize that scientific discourse and debate are integral to the advancement of knowledge. Skepticism and critical evaluation of evidence are fundamental to the scientific process, and legitimate challenges to prevailing scientific views can lead to a deeper understanding of complex phenomena.

In the case of climate change, the scientific community continually evaluates and refines its understanding of the Earth's climate system. This process involves ongoing research, data collection, and modeling to improve predictions and projections of future climate scenarios. The IPCC's assessments are periodically updated to incorporate the latest scientific findings and to reflect the evolving understanding of climate change.

It is also worth noting that skepticism and dissenting viewpoints within the scientific community are not uncommon. However, for a viewpoint to gain broad acceptance, it must be supported by rigorous, peer-reviewed research and evidence that withstands scrutiny and reproducibility. In the case of climate change, the consensus among climate scientists and the weight of evidence from multiple fields of study strongly support the conclusion that human activities are driving significant changes in the Earth's climate.

In conclusion, while Grant Miles' statement challenges the IPCC's conclusions on global warming, the overwhelming consensus within the scientific community supports the reality of human-induced climate change. The IPCC's assessments are based on extensive scientific research and undergo rigorous review to ensure their accuracy and reliability. Ongoing scientific inquiry and debate are essential components of the advancement of knowledge, and the consensus on climate change is based on a robust body of evidence from multiple scientific disciplines. It is through continued research, open dialogue, and critical evaluation of evidence that our understanding of climate change will continue to evolve.