[rickmichaels]

Is this available in English?

[Colinsky]

Is this available in English?

The half-life of some radioactive elements changes depending on whether you measure it in January or in July. This evidence has not fit in well with the standard theory that half-lives are immutable.

This article posits that the variation in the flow of neutrinos from the Sun is causing the disparity. We're hit by a lot more solar neutrinos in January, when the Earth is three million miles closer to the Sun than in July.