Climate change can also be caused by human activities, such as the burning of fossil fuels and the conversion of land for forestry and agriculture since the beginning of the industrial revolution, these human influences on the climate system have increased substantially. Human influence has been detected in warming of the atmosphere and the ocean, and in changes throughout the climate system it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century the latest assessment report of the intergovernmental. Partial list of leading scientific organizations endorsing human-induced climate change, along with a selection of related resources global climate change caused by human activities is occurring now, and it is a growing threat to society “human influence on the climate system is clear, and recent anthropogenic emissions of.
Statement on climate change from 18 scientific associations observations throughout the world make it clear that climate change is occurring, and rigorous scientific research demonstrates that the greenhouse gases emitted by human activities are the primary driver. Most americans recognize climate change, but some are still unsure about its causes tens of thousands of scientists in more than a hundred nations have amassed an overwhelming amount of evidence pointing to a clear conclusion: humans are the main cause.
Most climate scientists agree the main cause of the current global warming trend is human expansion of the greenhouse effect — warming that results when the atmosphere traps heat radiating from earth toward space. Human-caused climate change isn’t just a theory, it’s reality,” said michael e mann, a professor of atmospheric science at pennsylvania state university “whether we’re talking about unprecedented heat waves, increasingly destructive hurricanes, epic drought and inundation of our coastal cities, the impacts of climate change are no longer subtle.
Is current warming natural in earth’s history before the industrial revolution, earth’s climate changed due to natural causes not related to human activity most often, global climate has changed because of variations in sunlight.
The report showed that scientists can evaluate the effect of climate change on a single extreme event--how human-caused emissions can increase the likelihood of that event to happen.