Is climate change real?

Yes, climate change is real.

There is an overwhelming scientific consensus—supported by decades of data, observations, and peer-reviewed research—that the Earth's climate is rapidly warming and that human activities are the primary driver.

1. The Scientific Consensus

A vast majority of actively publishing climate scientists—between 97% and over 99%—agree that humans are causing global warming and climate change.

•Major Scientific Organizations: This position is officially endorsed by nearly every major scientific body worldwide, including the U.S. National Academies of Sciences, Engineering, and Medicine, the Intergovernmental Panel on Climate Change (IPCC), NASA, the World Meteorological Organization, and the national academies of dozens of other countries.

•IPCC Findings: The IPCC, which compiles the work of thousands of scientists globally, states that the human role in warming the atmosphere, ocean, and land is "unequivocal".

2. The Primary Cause

The Earth has natural climate cycles, but the current period of warming is happening at a rate unprecedented in thousands of years. This is driven by the greenhouse effect:

•Greenhouse Gases (GHGs): When we burn fossil fuels (like coal, oil, and natural gas) for electricity, heat, and transportation, we release massive amounts of carbon dioxide ($CO_2$) and other greenhouse gases into the atmosphere. Other activities, such as clearing forests (deforestation) and certain agricultural practices, release $CO_2$ and methane.

•Trapping Heat: These gases act like a blanket around the Earth, trapping the sun’s heat in the atmosphere instead of allowing it to escape back into space.

3. The Physical Evidence

Scientists track climate change through direct, measurable evidence across the globe:

•Rising Global Temperatures: The average global temperature has risen by more than 1°C (2°F) since the late 19th century, with the vast majority of that warming occurring in the last few decades.

•Warming Oceans: The oceans absorb over 90% of the excess heat trapped by greenhouse gases. This warming causes seawater to expand, contributing to sea-level rise, and threatens marine ecosystems like coral reefs.

•Shrinking Ice Sheets and Glaciers: The Greenland and Antarctic ice sheets have lost billions of tons of ice, and glaciers in almost every region of the world are actively retreating.

•Rising Sea Levels: Global sea levels are rising at an accelerating rate due to a combination of melting land ice (like glaciers and ice sheets) and the thermal expansion of seawater as it warms.

•Extreme Weather Events: Climate change is shifting weather patterns, leading to more frequent and intense heatwaves, more severe droughts, heavier rainfall, and stronger tropical storms.

Summary

While the climate has changed in Earth’s deep geological past due to natural causes (such as changes in the Earth’s orbit or volcanic activity), those changes took place over thousands or millions of years. The rapid warming observed today is happening over decades and is directly tied to human greenhouse gas emissions.

Citations (5)

1wikipedia.orgEncyclopedias and referencequality 0.83
wikipedia.org
Backs: “There is an overwhelming scientific consensus—supported by decades of data, observations, and peer-reviewed research—that the Earth's climate is rapidly warming and that human activities are the primary driver. 1.”
2nasa.govGovernment
nasa.gov
Backs: “A vast majority of actively publishing climate scientists—between 97% and over 99%—agree that humans are causing global warming and climate change. Major Scientific Organizations: This position is officially endorsed by nearly every major scientific body worldwide, including the U.S.”
3skepticalscience.comNonprofits and think tanks
skepticalscience.com
Backs: “Major Scientific Organizations: This position is officially endorsed by nearly every major scientific body worldwide, including the U.S. National Academies of Sciences, Engineering, and Medicine, the Intergovernmental Panel on Climate Change (IPCC), NASA, the World Meteorological Organization, and the national…”
4forbes.comNews and mediaquality 0.83
forbes.com
Backs: “IPCC Findings: The IPCC, which compiles the work of thousands of scientists globally, states that the human role in warming the atmosphere, ocean, and land is "unequivocal". 2.”
5cornell.eduAcademic
cornell.edu
Backs: “The rapid warming observed today is happening over decades and is directly tied to human greenhouse gas emissions. 1.”