How to move Skittles with your mind over the Internet

Okay, so this isn’t exactly mind control. It’s really just tracking eye movements with users’ webcams, which are then translated into commands given to Wi-Fi-controlled robots that are attached to individual Skittles.

Troubleshoot your wireless network with Wi-Fi Diagnostics

To launch Wi-Fi Diagnostics, hold down the Option key as you click on the Wi-Fi icon in the menu bar. That’ll open the Wi-Fi menu with an Open Wi-Fi Diagnostics item at the bottom; click that item to open the utility. You can also launch the program directly from its hidey-hole: In the Finder, choose Go > Go to Folder, and enter /System/Library/CoreServices/. You’ll find the Wi-Fi Diagnostics app in there.