4-H program aims to grow next generation of ag scientists

ST. PAUL, Minn. (AP) — One team is developing GPS ear tags so cattle farmers can track herds from afar. Another thinks drones can protect livestock from predators. Yet another is developing a rechargeable portable warmer to prevent vaccines from freezing when dairy producers inoculate their herds in the winter.
These aren’t corporate or university researchers, but teenagers in Minnesota’s 4-H Science of Agriculture Challenge, which aims to nurture the next generation of agricul