Frontiers and Frontiers Loop
[Frontiers](http://home.frontiersin.org/) would be a popular icon with academics I'm sure. The main logo icon is the cubes, and they also have [Frontiers Loop](http://loop-discovery.frontiersin.org/) which is their social network for academics and has an icon with a bunch of circles all cobbled together like a hairball. 

Thank you for the incredibly useful icon set!

![image2_thumb_400](https://cloud.githubusercontent.com/assets/1657096/17817884/63b416d2-6606-11e6-993d-e85a0edcefe7.jpg)
![75b747ff376e5cbd27ab4047a6760678](https://cloud.githubusercontent.com/assets/1657096/17817883/63b03666-6606-11e6-8aa9-5c40aa7f7365.png)
