Author Archives: John Pullen

Coffee is one of the world’s most popular beverages with perhaps tea being just as popular. It is known coffee contains caffeine which stimulates the central nervous system or CNS. It also has an effect on the heart and muscles (the heart, of course, is a muscle). Coffee also consists of chlorogenic acid which mayContinue reading “Be Alert with Coffee or Not”

The periodic table lists the elements in terms of their atomic weight. This is a measure of how many protons are present in the nucleus of each atom. The lightest of all is hydrogen; the heaviest at the other end of the table is unoctium. But of course, nothing is ever as simple as itContinue reading “Beyond the Periodic Table”

We have probably all heard of anaesthetics and many of us have had them administered to us by medical professionals. They can be put into two categories. The first is termed local anaesthetics. These have the effect of numbing or desensitising a part of the body which is reversible and does not lead to aContinue reading “Introduction to Anaesthetics”

It is no surprise to know that many of the animals we know today, had prehistoric ancestors which were much larger but still recognisable to what we see today. Among these was the kangaroo. None of them exist today and have not been around for tens of thousands of years. Modern kangaroos are common inContinue reading “What Killed Off the Giant Kangaroo?”

Warning: This article contains some disturbing descriptions of cannibalism. But I am sure this will not stop those with a curious mind. There have been many accounts of cannibalism throughout history and taking place over many parts of the world. Several of these have allegedly happened in recent history. There are, we believe a numberContinue reading “Who’s for Dinner?”