Harvesting Water as Inspired by a Darkling Beetle

4.6 billion-year-old meteorite may reveal the origin of Earth's water

Can someone clarify what this fluoride study in public water sources is trying to say? From what I read, it’s implying that fluoride levels in public water sources is over the recommended limits that causes harm and has no benefit on reducing incidence of tooth decay.

Plant roots change shape and branch out for water