Read up about how a marketing campaign using LEDs was misunderstood as a bomb threat.
Stay tuned later in the semester as Nick, Matt, and Iain lead us in a skillshare to make LEDs! Or in the meantime, you can investigate how to build your own. Check out these links:
http://www.makezine.com/blog
http://graffitiresearchlab.com
http://graffitiresearchlab.com
http://imakeprojects.com
http://www.sparkfun.com
http://sub-zero.mit.edu/fbyte
http://www.instructables.com