Hasn't the climate always changed?
Earth's climate genuinely has changed naturally many times, from ice ages to warm periods. Here is why that does not hold up.
Earth's climate genuinely has changed naturally many times, from ice ages to warm periods.
That does not mean humans cannot change it too.
Past climate change actually helps the case. If greenhouse gases, orbital shifts and feedbacks changed the climate before, then changing greenhouse gases now matters. The question is not whether climate has changed before, but what is causing the change now. Every past warm period we understand had a clear natural cause, and none of those causes is acting today.
Natural climate change in the past does not disprove human-driven climate change now.
Frequently asked
Natural climate change in the past does not disprove human-driven climate change now.
That does not mean humans cannot change it too.