THE POND ISN'T LIQUID—IT'S A TRAP. The signal is faint. The wetlands are vast. And the laws of physics have just changed. In The Nature Hacker Book 2: The Glass Pond , siblings Leo and Lily shrink down to follow a "ghost signal" left by their missing mother. But at 1:12 scale , a quiet pond is no longer a swimming pool—it is an impenetrable floor of glass. The water is too hard to break, and the air is too thick to carry sound. To survive, the twins must navigate a world where a water strider is a lethal predator and a simple ripple feels like an earthquake. Triggering their new device might save their lives, but it could start a chain reaction that threatens the entire ecosystem beneath their feet. Can the Nature Hackers solve the puzzle without destroying the world they came to explore? Real Science. Real Danger. The adventure continues!