Scientists develop smartwatch-like health trackers for cows

Wearable devices powered by kinetic energy of cows will gather data to help track cattle wellbeing

Cows on farms could soon have their health, reproductive readiness and location monitored by smart technology powered by the kinetic energy of the animal's movements.

Devices that monitor the health of each cow or keep them within invisible fences are already used on farms but these smart tools are often powered by chemical batteries, which add to energy used by an emissions-intensive industry.