In the cold months when tomato plants have long surrendered to silence, a team of researchers at Hebrew University has found a way to keep them speaking. By mapping and editing the genetic circuitry that governs flower development and pollen release, scientists have coaxed tomatoes into producing fruit without fertilization — yielding six times more ripe tomatoes in winter greenhouse conditions than unmodified plants. It is a reminder that the limits we accept as natural are often merely the limits of what we have yet to understand.