The linked page has diagrams that are important to know when reading the article, so I won't be posting the article here, just the link. I think it's neat!
No. It is using a title like that purely to attract viewers.
Many people think the speed of light is constant, which is only half true. There are two 'speeds': the speed of the photon and the rate of propagation through media. The speed of the photon is constant, it has no mass. The second 'speed' is what is not constant. It changes with every medium it passes through and we've know this for years. Certain media absorb and re-emit photons at a different rate than others (eg, limestone and diamond). This means the photon travels inside the diamond at a constant speed, but it only is allowed to move at a certain, varying rate depending on what it's going through.
It's very confusing because as far as I know there is no succinct term to describe that second variable speed other than rate of propagation or some similar mouthful.
This article is valid since it describes how quantum mechanics can change the speed of light over a large distance, but it uses a misleading title to attract attention to an otherwise mostly uninteresting topic.
>>3 Well, technically that sentence is stored as a magnetic field on a hard drive, which will bend space and create gravity, so the entire post will physically warp itself around it...
