erosion

climate change

The red planet Mars is worthy of attention this month as it both grows in brightness and gets easier to see after midnight. The planet has spent much...

I associate the arrival of a northern waterthrush with the start of the southward songbird migration.

Catherine the Great, Hagar the Horrible, Andre the Giant, Ming the Merciless, and Pliny the Elder all have evocative names that describe a quality...

A thin crescent moon appears low in the southwestern sky beginning next week. Take a look Tuesday night for the moon appearing near the bright star...

Are hummingbirds really pugnacious? Many observers think so but I say they are not always feisty.

If imitation is the sincerest form of flattery, red-spotted purples live in praise of pipe vine swallowtails.  

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