Author Archives: John Pullen

In this second article we will look at how the coronavirus virus infects us and causes the disease we know as Covid-19. We already know that coughs and sneezes from an infected person can spread millions of viral particles within droplets into the air and anyone coming in contact with them can become infected byContinue reading “Coronavirus 2 – How it attacks the body”

Most everyone knows the River Thames flows through London. But there are many smaller rivers which feed into the Thames and are either lost or hidden from us today. One of these is called the Neckinger and comes from “the Devil’s neck-cloth” which is an old term for the hangman’s noose.     Today it flowsContinue reading “History – The Devil’s River”

There can be few people on this planet who are unaware of the pandemic attacking almost every country. Its full title is SARS-CoV-2 which indicates that it is not flu but a form of Severe Acute Respiratory Syndrome. The medical condition it causes is known as Covid-19. However, like the common cold and flu, itContinue reading “Coronavirus 1 – Where it may have come from”

Most people who travel by air know that there are pressure changes when the aircraft climbs and descends. This is often reflected in their ears “popping” as the ear attempts to equalise the pressure changes. But few of them understand what goes on during these phases of a flight.     As you gain altitude, airContinue reading “Science: Airline Passengers under Pressure”

Those who know London will tell you that there are many tunnels crossing underneath the River Thames. Some carry motor vehicles, others trains and tube trains and a couple are for pedestrians. The latter two are located at Greenwich and Woolwich. But there is another pedestrian tunnel which remains unknown to most people.     ItContinue reading “Secret London Thames Tunnel”

Our planet is not as hospitable as you might like to think. And finding the right environment in which to live may not be that straightforward. Many parts of the world are not that suitable for humans to survive in. The oceans are pretty much out for the vast majority of us. But so isContinue reading “Room to Live”