The material about the fine structure constant is interesting. It is old, though. Here is Setterfield's response:
What about the variation in the fine structure constant?
In Physical Review Letters, published on 27 August 2001, there appeared a report from a group of scientists in the USA, UK and Australia, led by Dr. John K. Webb of the University of New South Wales, Australia. That report indicated the fine-structure constant, a, may have changed over the lifetime of the universe. The Press came up with stories that the speed of light might be changing as a consequence. However, the change that has been measured is only one part in 100,000 over a distance of 12 billion light-years. This means that the differences from the expected measurements are very subtle. Furthermore, the complicated analysis needed to disentangle the effect from the data left some, like Dr. John Bahcall from the Institute for Advanced Study in Princeton, N.J., expressing doubts as to the validity of the claim.
The suggested change in the speed of light in the press articles was mentioned because light-speed, c, is one of the components making up the fine-structure constant. In fact the precise formulation is a = e2/(2ehc) where e is the electronic charge, e is the electric permittivity of the vacuum, and h is Planck's constant (see, for example, K. W. Ford, Classical and Modern Physics, Vol. 3, p.1152, Wiley 1974). In this quantity a, the behaviour of the individual terms is important. * To illustrate the necessity of considering the behaviour of individual terms, the value of light-speed, c, has been measured as decreasing since the 17th or 18th century. Furthermore, while c was measured as declining during the 20th century, Planck's constant, h, was measured as increasing. However, deep space measurements of the quantity hc revealed this to be invariant over astronomical time. The data obtained from these determinations can be found tabulated in the 1987 Report The Atomic Constants, Light, and Time" by T. Norman and B. Setterfield. Since c has been measured as declining, h has been measured as increasing, and hc shown to be invariant, the logical conclusion from this observational evidence is that h must vary precisely as 1/c at all times. If there is any change in a, this observational evidence indicates it can only originate in the ratio e2/e. This quantity is discussed in detail in the paper currently undergoing review, "Atomic Quantum States, Light, and the Redshift."
* For that reason it is necessary to make sure that the e term is specifically included instead of merely implied as some formulations do. Indeed, I did not specifically include it in the 1987 Report as it played no part in the discussion at that point.
Barry Setterfield, 4 October 2001.
from http://www.setterfield.org/queries/index.html
As far as macroscopic mass changing, no it hasn't. And there is a good reason for this. Macroscopic mass is measured via gravity. Gravity has not changed!
Microscopic mass is measured differently, however, as mentioned before. It has changed.