Droughts aren't really climate change, they are a normal part of the weather patterns in a climate zone. "Droughts becoming more severe or frequent" could be co

Droughts aren't really climate change, they are a normal part of the weather patterns in a climate zone. "Droughts becoming more severe or frequent" could be construed as climate change. Or it could just be mean reversion. Doubtless major climactic events have caused migrations. Desertification has many well attested examples.