One Day Your Tears Will Fuel These Batteries

Scientists at Fudan University in China have developed new batteries that aim to be replacements for batteries used to power wearables and medical devices. As The Verge reports, these batteries are powered by "saltwater and IV rehydration solutions." News of these batteries were published in the Chem journal, where it was explained that these batteries were developed as a safer option for devices that need to be powered inside the body. Not only does this help to make the batteries more...