When it comes to photography, a Wilson Bentley image can be described much like his favorite subject, the snowflake: Each is one of a kind. After all, the Vermont farmer was the first to ever photograph one.

In other news Tuesday, the U.S. reopened its embassy in Yemen after security concerns forced a two-day closure, and "rising threats and attacks" pushed the United Nations World Food Program to suspend aid to approximately 1 million people in southern…