Stars leave the main sequence when they stop burning hydrogen.

BBC: Date set for desert Earth

Click here to watch the official main title sequence from CBS.com.

FORBES: Dear Conspiracists: Big Brother Uses Big Data

Main.net uses a related technology called direct sequence spread spectrum, or DSSS, to send its signals down the power line.

FORBES: Technology

As the opening sequence of the video shows, drivers on main roads like Caledonian Road do not stick to the 30mph limit as it is.

BBC: Will a borough-wide 20mph speed limit work?