Climate Change Threatens Existence of Life on Earth
Climate change has happened before due to natural causes, but now it's mainly caused by humans. The Earth used to recover from past climate changes, but the current changes are too extreme and fast for the Earth to handle. The environment is being pushed beyond its limits, and it's unlikely to return to normal. The article discusses both natural and human causes of climate change and compares how things were in the past to how they are now.