Plant Your Mobile Charger in the Dirt

VOA
Plant Your Mobile Charger in the Dirt
Summary
The device which changes the energy released from the plant into the low-level power to charge mobile phones was developed by university students in Santiago. This invention is a small biological circuit called E-Kaia. It collects the energy which plants produce during photosynthesis.  It plugs into the ground and then into a mobile phone by using an outlet to plug. It doesn't take over two hours to fully recharge.
Discussion
1.What do you think about this new invention?
I think that this is a great invention. Typically, girls students are told they are not good in science. However, for me these girls and great.  Girls  always want to use SNS through the mobile phone than boys. They have to charge their mobile phone anytime and anywhere, therefore this idea lead to this invention.
2.How do you usually save power on your mobile phone?
I use my mobile phone only when necessary, because it is expensive. The energy has to be saved and I feel that I using  SNS is a waste time. I don't play games by useing tablet or  mobile phone. I don't watch YouTube.
3.What was your greatest science project when you were a student?
When I was an lementary school student, in our class, our greatest science project was to observe the growth of the sunflowers. In Japan, if you sow seeds of  sunflowers in the spring, it will bloom in the summer.
It was sowed with different conditions which were to water it every day or not, to be sowed in the shade or not, and in the big yard or in the small planters. 
We recorded those observations every day. I was surprised with the clear result. In the shady small planters, small sunflowers bloomed.  However, big sunflowers bloomed where its taller than me in the big yard.
We felt that the plants had strong life functions.