How do you grow stalagmites and stalactites at home?

To grow stalagmites and stalactites at home, you can create a simple setup using a container, a saturated solution of calcium carbonate (like limestone or chalk dissolved in water), and a source of evaporation, such as a small dish or a cup. Place the saturated solution in the container and allow it to slowly evaporate over time. As the water evaporates, calcium carbonate will begin to crystallize, forming the structures. Keep the environment humid and maintain a steady temperature for best results.