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Read articles, including Science News stories written for ages 9-14, on the
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- Better chow yields more milk: A more nutritious form of corn for dairy cows boosts farm profits, teen investigator finds
- Fuzzy future: Kids may suffer impaired vision from spending too little time outdoors, studies suggest
- Building with moon rocks: Working on the moon with lunar soil and grit could prove easier, more efficient and less costly than using earthly materials
FOR KIDS: Your head’s battery
Fluids in the inner ear can actually power an electronic device, such as an implant
Web edition: January 18, 2013
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Scientists have designed a small electronic circuit (inside the two golden squares) to monitor and use the natural battery in an animal's ear.
Mercier et al. (2012), Nature Biotechnology
A natural powerhouse in the ear of guinea pigs can run a tiny electronic device, researchers show. Human ears contain that same structure, which operates like a battery. Doctors might one day use this system to power implants. Some might monitor an individual’s blood. Others could dispense medicines.
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