What is herd immunity?

We’ve all heard a lot recently about herd immunity (pun intended), but it’s a term which seems to cause a lot of confusion. First off, let me tell you what it’s not. It’s not about a population becoming exposed to the Covid-19 virus and those with some resistance or those being “fitter” surviving while othersContinue reading “What is herd immunity?”

SARS-CoV-2 : the virus

I’ll say one thing for the coronavirus outbreak, it has prompted a lot of curiosity. Whether you believe we are going back to the days of the plague pit, or it’s nothing but a severe cold, I have been asked a lot of questions about viruses in general and the coronavirus in particular. I’m notContinue reading “SARS-CoV-2 : the virus”

Now is not the time to be complacent about plastic pollution

Some of us are old enough to remember when a polyester suit was fashionable. Although still used in clothing today, polyester has diminished in appeal since the 1970s. There is however, plenty of polyester still around but in a different guise as PET or polyethylene terephthalate which is the major constituent of plastic drinks bottles.Continue reading “Now is not the time to be complacent about plastic pollution”