data gaps

Coronavirus Tests and Their Limits

Eyeballing trends in the epidemic? Proceed with caution!

Many of us anxiously scan coronavirus statistics, looking at trends and cross-country comparisons. Warning: We need to be cautious in interpreting those numbers.  There’s lots of noise in the data, meaning that it’s not always an accurate measure of what we want to know about the disease. Even death counts are not always reliable — …


Heads out of the sand on water supply risks

Last month the Senate passed S. 22, the Omnibus Public Land Management Act. Buried in the depths of the lengthy bill is an important section called “Secure Water” which is intended to ensure that the nation understands and confronts the effects of climate change on water supply. It would require that the Department of Interior …