Is climate change real?

Yes, climate change is real. There is an overwhelming scientific consensus that Earth’s climate is warming rapidly and that human activities are the primary driver of this change.

Multiple independent studies have shown that over 97% to 99.9% of actively publishing climate scientists agree that modern climate change is real and caused by humans. Major scientific organizations worldwide—including NASA, the Intergovernmental Panel on Climate Change (IPCC), and virtually every national academy of science—strongly endorse this conclusion.

The reality of climate change is supported by several key lines of physical evidence:

1. Rising Global Temperatures

The average surface temperature of the planet has risen significantly since the late 19th century. This warming has accelerated in recent decades, with the warmest years on record occurring almost entirely within the last 10–15 years.

2. Ocean Warming

The Earth’s oceans absorb much of the increased heat trapped by greenhouse gases. Measurements show that the top layers of the ocean have warmed significantly, which impacts marine ecosystems, fuels stronger storms, and contributes to rising sea levels as warmer water expands.

3. Shrinking Ice Sheets and Glaciers

Earth’s ice sheets, glaciers, and snow cover are shrinking rapidly. Data from NASA shows that the Greenland and Antarctic ice sheets have lost billions of tons of ice, and Arctic sea ice is declining at a dramatic rate.

4. Rising Sea Levels

Global sea levels are rising as a direct result of two factors: water melting from glaciers and ice sheets on land, and the expansion of seawater as it warms. Rising seas increasingly threaten coastal communities, infrastructure, and low-lying ecosystems.

5. More Extreme Weather Events

The frequency and intensity of extreme weather events are increasing globally. This includes longer and more intense heatwaves, more severe droughts in some regions, and heavier rainfall and flooding in others. Warmer air holds more moisture, leading to more intense storms and hurricanes.

What is causing it?

The primary driver of modern climate change is the greenhouse effect. When humans burn fossil fuels (like coal, oil, and natural gas), clear forests, and engage in intensive agriculture, we release large amounts of greenhouse gases—mainly carbon dioxide, methane, and nitrous oxide—into the atmosphere. These gases act like a blanket, trapping heat from the Sun that would otherwise escape back into space.

While Earth's climate has changed naturally throughout history (due to slight changes in Earth's orbit or solar activity), ice cores and geological records show that the current rate of warming is occurring roughly 10 times faster than the rate of warming seen during historical transitions out of ice ages. The current level of warming cannot be explained by solar activity or natural cycles alone.