We think dark matter is a particle too, it's just an odd form of matter in the fact that we don't perceive it very readily.

BBC: Dark Matter: Experiment to shed light on dark particles

It just represents the 70-odd kilometres that there are of Edinburgh's completely off-road, traffic-free pathways.

BBC: Edinburgh cyclists launch interactive 'innertube' map

It's odd that one of the most famous figures of the 20th century is doing mutual fund ads just to stay in the public eye, but that's showbiz.

NPR: Slate's Ad Report Card: Sir McCartney's Fidelity Ads