I live in one of the regions that got overrun with cicadas this year, so I paid extra attention to a recent article in Scientific American about how those broods keep time. They count cycles of sap! The experiment they used forced some trees to go into an extra cycle (controlled environment or something) and the cicadas came up early.
Know what else counts? Cicadas!
I live in one of the regions that got overrun with cicadas this year, so I paid extra attention to a recent article in Scientific American about how those broods keep time. They count cycles of sap! The experiment they used forced some trees to go into an extra cycle (controlled environment or something) and the cicadas came up early.