Is your impulsivity pathological?

Do you say or do things you soon regret? According to researchers at UC Berkeley and Harvard and a handful of others, “negative urgency” is a clinical form of impulsivity linked to depression, OCD, eating disorders, self-harm, ADHD and…

Turning infrared into visible light

Every light wave is characterized by its frequency and the human eye can detect frequencies between 400 and 750 trillion Hz (or terahertz, THz), which define the visible spectrum. Cell phone camera light sensors detect frequencies down to…