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The Zodiac Killer Letters: Ciphers, Authenticity, and Geographic Clues
Decades after the Zodiac killings, some of the ciphers are cracked and some still resist every attempt. These approaches differ on where the truth hides: verifying which letters are authentic, reading the solved codes for clues, wrestling with the short ambiguous ones, or chasing geographic hints like the Mount Diablo bearings. Following them shows why some secrets fell and others may never.

Astrology and Evidence: Testing, Bias, and Self-Reflection
Astrology keeps failing rigorous tests of predictive power, yet millions still organize their lives around it. These views span the science that debunks it, the cognitive biases that sustain belief, and the case for horoscopes as tools for self-reflection rather than prediction. Weighing them shows what astrology can't do and what it still does for people anyway.

A Stargazer's Handbook to Constellations: Stars, Visibility, and Cultural Meanings
Constellations organize the night sky into recognizable patterns, linking astronomical observation with centuries of cultural meaning. Readers will learn how major constellations are identified, what stars define them, when and where they are visible, and how different traditions have interpreted their forms and stories.