Is climate change real?

Yes, climate change is real.

The conclusion that Earth’s climate is warming and that human activities are the primary driver is not a matter of political opinion; it is an established scientific fact supported by decades of rigorous research, data collection, and observation.

The scientific consensus, the causes, and the overwhelming evidence proving that climate change is happening are detailed below:

1. The Scientific Consensus

Among actively publishing climate scientists, there is an overwhelming agreement—between 97% and 99%—that climate change is real and caused by human activity.

Virtually every major scientific organization in the world, including the Intergovernmental Panel on Climate Change (IPCC), NASA, the National Oceanic and Atmospheric Administration (NOAA), and the national science academies of major industrialized countries, shares this consensus. No national or international scientific body of standing disputes this conclusion.

2. What Is Causing It?

The primary driver of modern climate change is the greenhouse effect.

•The Greenhouse Effect: Earth's atmosphere naturally contains gases (like carbon dioxide, methane, and water vapor) that trap heat from the Sun, keeping the planet warm enough to support life.

•The Human Influence: Since the Industrial Revolution in the mid-19th century, humans have burned massive amounts of fossil fuels (coal, oil, and natural gas) for energy, cleared forests, and expanded industrialized agriculture. These activities have released vast quantities of additional greenhouse gases into the atmosphere. This acts like an increasingly thick blanket around the Earth, trapping excess heat and warming the planet.

3. The Evidence

Scientists track climate change using thousands of land, ocean, and space-based instruments. The key lines of evidence include:

•Rapidly Rising Temperatures: The Earth’s average surface temperature has risen by about 2°F (1.1°C) since the late 19th century. The warming is accelerating: the past 11 years (2015–2025) have been the 11 warmest years in the historical record, with 2024 registering as the hottest year ever recorded.

•Warming Oceans: The world's oceans absorb more than 90% of the excess heat trapped by greenhouse gases. Marine heatwaves are increasing, and ocean temperatures continue to break records.

•Shrinking Ice Sheets and Glaciers: Ice sheets in Greenland and Antarctica are losing hundreds of billions of tons of mass per year. Glaciers in the Alps, Andes, Himalayas, and Rockies are retreating rapidly, and Arctic sea ice is shrinking in both area and thickness.

•Rising Sea Levels: Global sea levels have risen significantly as a result of two main factors: water expanding as it warms (thermal expansion) and meltwater from shrinking glaciers and ice sheets. This rise is accelerating, threatening coastal communities.

•Extreme Weather Events: Extreme weather is becoming more frequent and intense globally. Heatwaves are lasting longer and reaching higher temperatures, droughts are becoming more severe, and a warmer atmosphere is holding more moisture, leading to heavier rainfall and more catastrophic flooding.

•Ocean Acidification: The oceans absorb about 30% of the carbon dioxide humans emit into the atmosphere. This has caused a chemical shift, making the oceans more acidic, which directly threatens marine life, particularly coral reefs and shellfish.

Why It Matters

Climate change is not just about the planet getting slightly warmer; it is about the disruption of the stable climate systems that human civilization, agriculture, and ecosystems rely upon. The impacts—such as water scarcity, crop failures, severe wildfires, and property damage from rising seas—have significant economic, humanitarian, and ecological consequences.

Understanding that climate change is real is the first step toward implementing global solutions, such as transitioning to renewable energy, restoring ecosystems, and building more resilient communities to adapt to the changes already underway.

Citations (9)

1nasa.govGovernment
nasa.gov
Backs: “The conclusion that Earth’s climate is warming and that human activities are the primary driver is not a matter of political opinion; it is an established scientific fact supported by decades of rigorous research, data collection, and observation.”
2facebook.comSocial media and video
facebook.com
Backs: “The conclusion that Earth’s climate is warming and that human activities are the primary driver is not a matter of political opinion; it is an established scientific fact supported by decades of rigorous research, data collection, and observation.”
3nasa.govGovernment
nasa.gov
Backs: “The Scientific Consensus. Among actively publishing climate scientists, there is an overwhelming agreement—between 97% and 99%—that climate change is real and caused by human activity. Virtually every major scientific organization in the world, including the Intergovernmental Panel on Climate Change (IPCC), NASA, the…”
4wikipedia.orgEncyclopedias and referencequality 0.83
wikipedia.org
Backs: “The Scientific Consensus. Among actively publishing climate scientists, there is an overwhelming agreement—between 97% and 99%—that climate change is real and caused by human activity. Virtually every major scientific organization in the world, including the Intergovernmental Panel on Climate Change (IPCC), NASA, the…”
5earth.orgNonprofits and think tanks
earth.org
Backs: “The primary driver of modern climate change is the greenhouse effect. The Greenhouse Effect: Earth's atmosphere naturally contains gases (like carbon dioxide, methane, and water vapor) that trap heat from the Sun, keeping the planet warm enough to support life.”
6wmo.intGovernment
wmo.int
Backs: “These activities have released vast quantities of additional greenhouse gases into the atmosphere. This acts like an increasingly thick blanket around the Earth, trapping excess heat and warming the planet.”
7climate.govGovernment
climate.gov
Backs: “Rapidly Rising Temperatures: The Earth’s average surface temperature has risen by about 2°F (1.1°C) since the late 19th century. The warming is accelerating: the past 11 years (2015–2025) have been the 11 warmest years in the historical record, with 2024 registering as the hottest year ever recorded.”
8copernicus.euGovernment
copernicus.eu
Backs: “The warming is accelerating: the past 11 years (2015–2025) have been the 11 warmest years in the historical record, with 2024 registering as the hottest year ever recorded. Warming Oceans: The world's oceans absorb more than 90% of the excess heat trapped by greenhouse gases.”
9carbonbrief.orgNews and mediaquality 0.85
carbonbrief.org
Backs: “Warming Oceans: The world's oceans absorb more than 90% of the excess heat trapped by greenhouse gases. Marine heatwaves are increasing, and ocean temperatures continue to break records.”