Hindu mythology has it that to rescue his wife Sita from Ravana, Lord Rama built a floating bridge from Rameshwaram to Sri Lanka across Palk Strait. The bridge is known as Rama Setu or Adam’s Bridge. What’s startling is that some stones found around the region, though similar in appearance to normal stones, tend to float when put in water. The reason behind the phenomenon of such floating stones is yet to be identified despite it having been studied by various scientists to date.