I knew it!
How cool is this.
Yelling at your mobile phone could charge the battery!
A team of Korean University researchers have developed a technology that does just that.
It is the reverse of what your speakers do when they
transform electrical impulses into sound.
You could also use the technology for ipods, which means you could recharge just by singing along to Bruno Mars!
… although it could make the ride home rather noisy and a little embarrassing.
So, here's one for that annoying younger sibling - technology that converts the energy of breathing to electricity.
It could make them worth having around after all.

We asked Australian students to make a video or convince us in writing about their BIG ideas for a sustainable energy future.
Check out the fantastic videos we received, all about sustainable energy solutions!
VIEW THE GALLERY OF ENTRIES
Explore the fascinating science edging us closer to low carbon living. This fun, flexible project includes easy-to-use ICT, oodles of resources and FREE lesson plans from CSIRO Education.
Links to Australian curriculum, plus NAPLAN rehearsal.
Find out more