To measure drought in the present day, we use data from sensors that constantly record environmental conditions, such as soil moisture, precipitation, and snow water content. But to measure drought thousands of years ago, researchers can use tree rings. Alvin Chang for The Guardian shows how the researchers line up old rings to gather historical data and then do that across a region.
Measuring centuries-old droughts through tree rings
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In land of YouTube dislikes, Justin Bieber rules
Happy Friday, everyone. If you’ll allow me, I’d like to …
Unemployment and Occupation
Unemployment has hit some industries more than others. Here’s how the most recent estimates compare against last year’s.