Knowledge Tree
human activity
Also known as: human activity, Human activities
Facts (39)
Sources
Scientific Consensus - NASA Science science.nasa.gov Oct 21, 2024 15 facts
claimMultiple studies published in peer-reviewed scientific journals indicate that climate-warming trends over the past century are extremely likely due to human activities.
claimMultiple studies published in peer-reviewed scientific journals indicate that climate-warming trends over the past century are extremely likely due to human activities.
quoteThe Earth’s climate is changing in response to increasing concentrations of greenhouse gases (GHGs) and particulate matter in the atmosphere, largely as the result of human activities.
quoteBased on extensive scientific evidence, it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century. There is no alterative explanation supported by convincing evidence.
claimSince systematic scientific assessments began in the 1970s, the influence of human activity on the warming of the climate system has evolved from theory to established fact.
quoteObservations 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.
quoteThe Geological Society of America concurs with assessments by the National Academies of Science (2005), the National Research Council (2011), the Intergovernmental Panel on Climate Change (2013), and the U.S. Global Change Research Program (2014) that global climate has warmed in response to increasing concentrations of carbon dioxide and other greenhouse gases, and that human activities are the dominant cause of the rapid warming since the middle 1900s.
quoteObservations 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.
claimThe U.S. Global Change Research Program, representing 13 U.S. government departments and agencies, stated in 2018 that Earth’s climate is changing faster than at any point in the history of modern civilization, primarily as a result of human activities.
claimScientific evidence indicates that human activities, primarily the burning of fossil fuels, have warmed Earth's surface and ocean basins, impacting the global climate.
quoteEleven international science academies stated in a joint statement that significant global warming is occurring, evidenced by direct measurements of rising surface air and ocean temperatures, rising average global sea levels, retreating glaciers, and changes to physical and biological systems, and that most of the warming in recent decades can be attributed to human activities.
claimScientific evidence indicates that human activities, primarily the burning of fossil fuels, have warmed Earth’s surface and ocean basins, which has impacted Earth’s climate.
quoteIt is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century, and there is no alternative explanation supported by convincing evidence.
quoteThe U.S. Global Change Research Program, representing 13 U.S. government departments and agencies, stated that Earth’s climate is changing faster than at any point in the history of modern civilization, primarily as a result of human activities.
quoteThe Earth’s climate is changing in response to increasing concentrations of greenhouse gases (GHGs) and particulate matter in the atmosphere, largely as the result of human activities.
Scientific consensus on climate change - Wikipedia en.wikipedia.org 5 facts
quotePeter Doran and Maggie Kendall Zimmerman wrote: "It seems that the debate on the authenticity of global warming and the role played by human activity is largely nonexistent among those who understand the nuances and scientific basis of long-term climate processes."
perspectiveThe science academies of 17 countries concurred in 2001 that global temperatures are rising and will continue to rise due to human activities, and they stressed the importance of cutting greenhouse gas emissions, concluding that "Business as usual is no longer a viable option."
quotePeter Doran and Maggie Kendall Zimmerman wrote: "It seems that the debate on the authenticity of global warming and the role played by human activity is largely nonexistent among those who understand the nuances and scientific basis of long-term climate processes."
measurementA 2021 study led by Krista Myers surveyed 2780 Earth scientists and found that agreement that human activity causes climate change ranged from 91% among all scientists to 100% among climate scientists with high levels of expertise (20+ papers published).
claimThe scientific consensus holds that it is unequivocal and incontrovertible that greenhouse gas emissions from human activities have caused warming on land, in oceans, and in the troposphere, with no natural processes providing an alternate explanation.
Ecology: Nature's Interactions and Ecosystem Dynamics scholarsresearchlibrary.com 3 facts
claimHuman activities, such as burning fossil fuels and deforestation, disrupt natural nutrient cycles and contribute to global warming and other ecological issues.
claimClimate change, primarily driven by the increase in greenhouse gases from human activities, is a profound impact on ecosystems.
claimHuman activities have significantly altered the natural world, often resulting in negative consequences for ecosystems.
ESS Subtopic 6.2: Climate change – Causes and Impacts mrgscience.com 3 facts
claimThe rise in atmospheric carbon dioxide concentrations is primarily caused by human activities, including the burning of fossil fuels, deforestation, and industrial processes.
claimThe UN's Intergovernmental Panel on Climate Change (IPCC) produced a systems diagram illustrating the inputs, outputs, and relationships among human activities, climate change processes, climate characteristics, and threats to human populations and ecosystems.
claimThe IPCC asserts that human activities, primarily through fossil fuel combustion and deforestation, are unequivocally responsible for the increase in carbon dioxide concentrations.
Dozens of scientists push back on 'fundamentally ... - ABC News abcnews.com Sep 3, 2025 2 facts
referenceThe U.S. National Climate Assessment determined that human activities, principally through emissions of greenhouse gases, have unequivocally caused global warming and that severe climate risks to the United States will continue to grow without deeper cuts in global net greenhouse emissions and accelerated adaptation efforts.
referenceThe Intergovernmental Panel on Climate Change (IPCC) concluded that human activities, principally through emissions of greenhouse gases, have unequivocally caused global warming.
Comprehensive Overview on the Present State and Evolution of ... link.springer.com Aug 9, 2024 2 facts
claimGlobal warming is defined as the increment in the temperature of the Earth's surface caused by the effect of greenhouse gases released into the atmosphere by human activities.
claimThe main drivers of global warming worldwide are human activities including burning fossil fuels, public transportation, electricity generation, industry and manufacturing, agriculture, farming livestock, oil and gas development, buildings, deforestation, and lifestyle choices.
Greater than 99% consensus on human caused climate change in ... iopscience.iop.org Oct 19, 2021 2 facts
claimThe peer-reviewed scientific literature shows greater than 99% agreement that greenhouse gas emissions from human activities are the principal driver of modern climate change since the Industrial Revolution.
claimAlternative explanations for the dominant cause of modern, post-industrial climate change, other than rising greenhouse gas emissions from human activities, are exceedingly rare in the peer-reviewed scientific literature.
Isn't there a lot of disagreement among climate scientists about ... climate.gov Feb 3, 2020 1 fact
claimA large majority of climate scientists agree that the average global temperature today is warmer than in pre-industrial times and that human activity is the most significant factor driving this change.
Climate change: evidence and causes | Royal Society royalsociety.org 1 fact
claimMost observed global warming over the past 50 years cannot be explained by natural causes and requires a significant role for human activities.
99.9% of studies agree humans caused climate change openaccessgovernment.org Oct 19, 2021 1 fact
measurementThe Pew Research Center found that only 27% of U.S. adults believe that “almost all” scientists agree that climate change is due to human activity.
3 ways the moon affects wildlife discoverwildlife.com 1 fact
claimLight pollution caused by human activities and cities disrupts the natural rhythms of life influenced by the moon.
A review of climate change impacts on migration patterns of marine ... frontiersin.org Oct 25, 2024 1 fact
claimThe reduction in sea ice in the Arctic is likely to increase human activities such as vessel traffic, oil, gas, and mining exploration and extraction, and coastal construction, which introduce artificial light, ocean noise, and collision risks that impact the migratory behaviors of some species.
How a major DOE report hides the whole truth on climate change politico.com Sep 27, 2025 1 fact
claimThe Environmental Protection Agency cited the Department of Energy report to claim that attributing rising temperatures to human activity is overly difficult.
National Academies Publish New Report Reviewing Evidence for ... nationalacademies.org Sep 17, 2025 1 fact
claimHuman activities, including the extraction and burning of fossil fuels, cement and chemical production, deforestation, and agricultural activities, emit greenhouse gases such as carbon dioxide, methane, nitrous oxide, and fluorinated gases into the atmosphere.