Is climate change real?

Yes

Yes, climate change is real. This is not a matter of opinion or speculation; it is an established scientific fact backed by an overwhelming body of evidence.

The global scientific community overwhelmingly agrees that the Earth’s climate is warming and that human activities are the primary driver of this change.

1. The Scientific Consensus

Among actively publishing climate scientists, there is a 97% to 99% consensus (with some peer-reviewed studies indicating up to 100%) that human activity is causing global warming. This position is officially endorsed by every major scientific organization in the world, including:

•The United Nations Intergovernmental Panel on Climate Change (IPCC)

•The National Aeronautics and Space Administration (NASA)

•The National Oceanic and Atmospheric Administration (NOAA)

•The National Academies of Sciences, Engineering, and Medicine

The IPCC has stated unequivocally that "human influence has warmed the atmosphere, ocean and land."

2. What Causes It?

The Earth has a natural "greenhouse effect" where gases in the atmosphere (like water vapor and carbon dioxide) trap heat to keep the planet warm enough to support life.

However, since the Industrial Revolution, human activities have artificially flooded the atmosphere with massive amounts of these heat-trapping greenhouse gases:

•Burning Fossil Fuels: Burning coal, oil, and natural gas for electricity, heating, and transportation releases immense amounts of carbon dioxide ($CO_2$). $CO_2$ levels in the atmosphere have risen from about 278 parts per million (ppm) in pre-industrial times to over 420 ppm.

•Deforestation: Trees absorb $CO_2$. Cutting down forests to create agricultural land or urban areas reduces the planet’s capacity to pull carbon out of the atmosphere.

•Agriculture and Industry: Activities like livestock farming and waste management release other potent greenhouse gases, such as methane ($CH_4$) and nitrous oxide ($N_2O$).

3. The Evidence for Climate Change

Scientists monitor the planet using satellites, weather stations, ocean buoys, and ancient climate records (like ice cores and tree rings). The evidence is clear across multiple indicators:

•Shattered Temperature Records: The ten warmest years since modern record-keeping began in 1880 have all occurred within the last decade. In fact, 2024 was officially confirmed as the hottest year on record, surpassing the record set in 2023.

•Rising Sea Levels: Global sea levels are rising at an accelerating rate. This is caused by two factors: water expanding as it warms (thermal expansion) and water flowing into the ocean from melting glaciers and ice sheets.

•Melting Ice and Glaciers: Glaciers worldwide are retreating rapidly. Ice sheets in Greenland and Antarctica are losing hundreds of billions of tons of ice per year, and Arctic sea ice is shrinking.

•Extreme Weather: Around the globe, we are seeing a dramatic increase in the frequency and intensity of extreme weather events, including prolonged heatwaves, devastating wildfires, severe droughts, and heavier precipitation leading to floods.

•Ocean Acidification: The world's oceans absorb about 30% of the carbon dioxide humans release into the atmosphere. This has triggered a chemical reaction that makes seawater more acidic, severely impacting marine life, such as coral reefs and shellfish.

Summary

Climate change is not a future prediction—it is actively happening. While Earth's climate has changed naturally over millions of years, the rate of current warming is unprecedented and cannot be explained by natural cycles like solar activity or volcanic eruptions. The evidence points directly to human greenhouse gas emissions as the primary cause.

Citations (10)

1climate.govGovernment
climate.gov
Backs: “Yes, climate change is real. This is not a matter of opinion or speculation; it is an established scientific fact backed by an overwhelming body of evidence.”
evidence, other, points to yes. Claim: Climate change is an established scientific fact backed by an overwhelming body of evidence, not a matter of opinion.
2nasa.govGovernment
nasa.gov
Backs: “Yes, climate change is real. This is not a matter of opinion or speculation; it is an established scientific fact backed by an overwhelming body of evidence.”
evidence, other, points to yes. Claim: Climate change is an established scientific fact backed by an overwhelming body of evidence, not a matter of opinion.
3wikipedia.orgEncyclopedias and referencequality 0.83
wikipedia.org
Backs: “The global scientific community overwhelmingly agrees that the Earth’s climate is warming and that human activities are the primary driver of this change.”
attribution, reference entry, points to yes. Claim: The global scientific community overwhelmingly agrees the climate is warming and humans are the primary driver.
4nasa.govGovernment
nasa.gov
Backs: “Among actively publishing climate scientists, there is a 97% to 99% consensus (with some peer-reviewed studies indicating up to 100%) that human activity is causing global warming. This position is officially endorsed by every major scientific organization in the world, including:”
statistic, other, points to yes. Claim: 97% to 99% of actively publishing climate scientists agree human activity is causing global warming.
5nasa.govGovernment
nasa.gov
Backs: “Burning Fossil Fuels: Burning coal, oil, and natural gas for electricity, heating, and transportation releases immense amounts of carbon dioxide ($CO_2$). $CO_2$ levels in the atmosphere have risen from about 278 parts per million (ppm) in pre-industrial times to over 420 ppm.”
evidence, other, points to yes. Claim: Burning fossil fuels for electricity, heating and transport releases immense amounts of carbon dioxide.
6weathernationtv.comNot yet classified
weathernationtv.com
Backs: “Scientists monitor the planet using satellites, weather stations, ocean buoys, and ancient climate records (like ice cores and tree rings). The evidence is clear across multiple indicators:”
evidence, article, points to yes. Claim: Scientists monitor the planet using satellites, weather stations, ocean buoys, and ancient climate records like ice cores and tree rings.
7noaa.govGovernment
noaa.gov
Backs: “Ice sheets in Greenland and Antarctica are losing hundreds of billions of tons of ice per year, and Arctic sea ice is shrinking. Extreme Weather: Around the globe, we are seeing a dramatic increase in the frequency and intensity of extreme weather events, including prolonged heatwaves, devastating wildfires, severe…”
evidence, other, points to yes. Claim: Greenland and Antarctic ice sheets lose hundreds of billions of tons of ice per year and Arctic sea ice is shrinking.
8latimes.comNews and mediaquality 0.85
latimes.com
Backs: “Extreme Weather: Around the globe, we are seeing a dramatic increase in the frequency and intensity of extreme weather events, including prolonged heatwaves, devastating wildfires, severe droughts, and heavier precipitation leading to floods. Ocean Acidification: The world's oceans absorb about 30% of the carbon…”
evidence, article, points to yes. Claim: Extreme weather events such as heatwaves, wildfires, droughts and floods are increasing in frequency and intensity.
9noaa.govGovernment
noaa.gov
Backs: “Extreme Weather: Around the globe, we are seeing a dramatic increase in the frequency and intensity of extreme weather events, including prolonged heatwaves, devastating wildfires, severe droughts, and heavier precipitation leading to floods. Ocean Acidification: The world's oceans absorb about 30% of the carbon…”
evidence, other, points to yes. Claim: Extreme weather events such as heatwaves, wildfires, droughts and floods are increasing in frequency and intensity.
10arizona.eduAcademic
arizona.edu
Backs: “Climate change is not a future prediction—it is actively happening. While Earth's climate has changed naturally over millions of years, the rate of current warming is unprecedented and cannot be explained by natural cycles like solar activity or volcanic eruptions.”
background, other, points to yes. Claim: Climate change is actively happening, not a future prediction, even though climate has changed naturally in the past.