Is climate change real?

Yes, climate change is real.

There is an overwhelming and unequivocal consensus within the global scientific community that the Earth’s climate is warming at an unprecedented rate, and that human activities are the primary driver.

The facts, evidence, and consensus surrounding climate change are established through several key pillars:

1. The Scientific Consensus

Among actively publishing climate scientists, more than 97% to 99% agree that climate change is real and caused by human activity. This position is officially endorsed by every major scientific organization in the world, including:

The IPCC has stated that the human influence on the warming of the climate system has evolved from theory to "established fact".

2. The Core Cause: The Greenhouse Effect

While Earth’s climate has gone through natural cycles over millions of years (such as ice ages), the current rapid warming trend is different. Since the Industrial Revolution in the mid-19th century, humans have burned massive amounts of fossil fuels (like coal, oil, and natural gas), cleared forests, and engaged in intensive agriculture.

These activities have released vast quantities of greenhouse gases—principally carbon dioxide ($CO_2$) and methane—into the atmosphere. These gases trap heat from the sun that would otherwise escape into space, acting like a blanket around the Earth and warming the planet. Ancient ice core data shows that $CO_2$ levels are rising hundreds of times faster than they did from natural sources after the last Ice Age.

3. The Compelling Evidence

Scientists do not rely on theories alone; they monitor real-time data collected by satellites, ocean buoys, weather stations, and natural records like tree rings and ice cores. This physical evidence includes:

In short, climate change is not a prediction for the distant future; it is a measurable reality happening right now, backed by centuries of foundational physics and overwhelming observational evidence.