This Halloween we asked Orion staff to identify some of the most skin-crawling Orion articles from the past four decades. From rabid bats to radical bicycle gangs and snake hallucinations, here are five staff favorites guaranteed to leave a mark.

We aren’t pretty pictures, we’re not even trees, we’re deep time survivors with complex needs.

Nature is avenged by a prehistoric animal.

Bicycle nomads, Texas utopianism, and the post-petroleum era.

The biological and cultural origins of being scared.

Why some health dangers inspire precaution—and some don’t.
