Below is a very interesting TED talk by Harald Haas from July 2011 on the use of light (and light detectors) to transmit digital data. I watched this video in August 2011 and just watched it again from my downloaded archive. This is really interesting.
It is worth noting, as Harald mentions, that data is transmitted as electromagnetic waves. And to those who are not aware light is an electromagnetic wave.
Since the school I currently teach at has not yet employed a Learning Management System (LMS)  or a School / Student Information System  that involves students (eg; in regard to assignments, worksheets, announcements, & grade book, etc…) and the students are expected to depend on their physical agenda which was not effective with some students, and since most students have a smartphone or access to a computer and an internet connection I started thinking of a way to solve this issue using technology.
Surely, I had to keep all students on equal footsteps especially for students who might be behind the class due to being slow writers or simply late because of being distracted.
This work is very interesting and will definitely help in the detection of widespread diseases like Tuberculosis (TB) in developing countries. The only primary obstacle that needs a real solution is countering the monopoly by vaccine manufacturers.
Morpheus is a vertical test bed vehicle demonstrating new green propellant propulsion systems and autonomous landing and hazard detection technology. Designed, developed, manufactured and operated in-house by engineers at NASA’s Johnson Space Center, the Morpheus Project represents not only a vehicle to advance technologies, but also an opportunity to try out “lean development” engineering practices.
Youtube channel: https://www.youtube.com/user/MorpheusLander/featured
Originally seen on Gizmodo: http://sploid.gizmodo.com/this-is-not-a-frame-from-a-science-fiction-movie-1537271129
We believe it’s possible to create a ring of balloons that fly around the globe on the stratospheric winds and provide Internet access to the earth below. Balloons present some really hard science problems, but we’re excited about the progress so far.
To learn more, visit: http://google.com/loon.
MakerBot Thingiverse  is a repository of designs for 3D printable things for use with RepRap 3D printers , humanity’s first general-purpose self-replicating manufacturing machine.
Referenced from: J.M. Pearce, Commentary: Open-source hardware for research and education. Physics Today, November 2013, page 8 .