In a Feb. 25 Science, Anna Gibbs mistaken referred to mild March weather that will affect the “lower 58 states” of the U.S. That should be the “lower 48 states.”

In a Feb. 21 Science, Jason Bittel misstated that the state of Alaska implemented a bounty system in 1917 to limit its bald-eagle population. At that time, Alaska was a territory, not a state.

Slate strives to correct all errors of fact. If you’ve seen an error in our pages, let us know at corrections@slate.com. General comments should be posted in our Comments sections associated with each article.