In the Mediterranean, a bloom of algae has silenced five of Israel's six desalination plants, leaving an arid nation suddenly without its primary source of fresh water. Scientists have traced the bloom's intensity, at least in part, to the destruction of Gaza's sewage infrastructure — a chain of consequence in which untreated wastewater, rich with nutrients, fed the very crisis now threatening those who destroyed it. The sea, indifferent to borders and intentions, has returned the damage downstream. This moment stands as a stark reminder that environmental systems do not honor the boundaries d