Stories of turning flesh to stone — and vice versa — are common in mythology. With calcium, we see how those same transitions can happen in the real world.
From Vulcan to vultures, today’s element brings stories of unintended consequences.
Just try to tally the body count behind the periodic table’s most reactive element, and learn why it’s good for your health.
Today we meet one man who’s responsible for the death of millions — and the survival of billions.