According to Naomie Oreskes, policy-makers and the media have constantly emphasized that climate change is uncertain. A number of the policy-makers have used this allegation to oppose the implementation of strong measures aimed at lessening the amount of gas emitted from the greenhouses. Statements made by various organizations, about the effect of science on climate change, prove that there is a substantial discrepancy about the authenticity of anthropogenic climate change. Reports released by scientific organizations in America shows that the global climate change is majorly caused by human activities. According to the scientific organizations, highly concentrated gas released from greenhouses greatly contributes to global warming. According to a number of people opposing scientists, the present climate change is natural. Scientists printing peer-review literature concur with the reports of the scientific organizations. Politicians and economists have always criticized the work of scientists. Arguably, the impression in this context is not correct. Even though some people consider scientific consensus to be wrong, it is important to act on what is not recognized. Research should be constantly carried out to ensure that climate dynamics are clearly understood. Since climate scientists have constantly tried to explain the causes of climate change, it is important for the rest of the people to listen and understand. To support her position, concerning the scientific consensus on the effect of human activities on climate change, Naomie Oreskes has used a number of evidences. For instance, the reports released by the Intergovernmental Panel on Climate Change (IPCC) indicate that human activities always interfere with the global climate. Naomie also argues that human activities have affected the concentration of atmospheric components. To further support her position, she states that global warming has been caused by the high concentration of greenhouse gases. The evidences provided above are strong considering that they are not based on rumors. Arguably, human activities are always considered as one of the major causes of global warming. For instance, the combustion of fossil fuels always produces carbon dioxide gas hence affecting climate. Therefore, this validates Naomie’s evidences. The evidences provided by Naomie are based on the changes in received solar radiation and released thermal radiation. The two radiations are considered to be responsible for the earth’s energy balance. Gases released in greenhouses always influence climate by changing the two radiations. Some of her evidences are also based on the reports released by various scientific organizations. Arguably, scientists are supposed to be trusted because they have changed the world in a number of ways. For instance, they have always provided viable causes of global warming and its prevention. Their predictions are always accurate and precise. Science involves testable forecasts hence scientists will always present facts. This provides a clear reason why science and scientists should be trusted. Through pear-review, she has created new knowledge by studying what people already know and carrying out various researches to validate the claims. Naomie has collected relevant information from scientific organizations and journals to understand the nature of the physical world. Majority of the climate scientists have accepted that the development of greenhouse effect is one of the causes of the present global warming. Greenhouse activities releases high concentration of carbon dioxide which affects both received solar radiation and released thermal radiation. This gas prevents heat from escaping hence they accumulate in the atmosphere. Therefore, the accumulation of gases creates a climate change.