I vividly remember the first time I saw uranium glass. In daylight, the antique bowl looked ordinary—pale green, transparent glass with a decorative rim—but under a UV light, it transformed, glowing ...

When Sarah Cooper goes secondhand shopping, she brings a little blacklight with her and shines it on everything—candlesticks, vases, dishware. If it starts glowing, often a Ghostbusters hue of neon ...