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The Causes of Climate Change. Human activities are driving the global warming trend observed since the mid-20th century. En español. Takeaways. The greenhouse effect is essential to life on Earth, but human-made emissions in the atmosphere are trapping and slowing heat loss to space.
The human impact on climate change. Humans have dramatically changed the atmosphere over the past few centuries, mainly by releasing vast amounts of greenhouse gases like carbon dioxide (CO2). That story begins in the 1700s with the Industrial Revolution, a time when human society began to change rapidly.
Human-driven causes of climate change. Scientists agree that human activity is the primary driver of what we’re seeing now worldwide. (This type of climate change is sometimes referred to as...
As greenhouse gas emissions blanket the Earth, they trap the sun’s heat. This leads to global warming and climate change. The world is now warming faster than at any point in recorded history....
Today’s climate change is driven by human activities. Scientists know that the warming climate is caused by human activities because: They understand how heat-trapping gases like carbon dioxide work in the atmosphere. They know why those gases are increasing in the atmosphere.
Both human-made and natural factors contribute to climate change: Human causes include burning fossil fuels, cutting down forests, and developing land for farms, cities, and roads. These activities all release greenhouse gases into the atmosphere.
There is overwhelming scientific evidence that Earth is warming and a preponderance of scientific evidence that human activities are the main cause.