Who was Typhoid Mary? She was a chef in the late 19th and early 20th centuries who was a carrier of typhoid and responsible for the deaths of several people. Someone who spreads diseases is often referred to as a “Typhoid Mary”, but many people probably don’t realize that Typhoid Mary was actually a real […]
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What causes a peanut allergy? A peanut allergy happens because the immune system attacks the proteins that are present in the peanuts. Peanut allergies are surprisingly common. It is estimated that roughly 2% of people have a peanut allergy. The reaction can range from mild to life-threatening, depending on the person. Many people in the
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Why do Monarch butterflies migrate so far? Monarch butterflies migrate for thousands of kilometers because they can’t survive the cold winters. We know that many species of birds navigate when the weather gets too cold. We are familiar with seeing different bird species in the summer and the winter where we live and we know
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Where did the Great Fire of London start? The Great Fire of London started in a baker’s shop in a road called Pudding Lane. It burned for five days. The Great Fire of London started on Sunday, 2nd September 1666 and it was finally extinguished on Thursday, 6th September. It destroyed over 13,000 homes, 87
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How can we 3D print organs? Organs can be 3D printed using an ink made of the patient’s own cells that are laid on a scaffold. One of the problems we have as humans is that our organs sometimes fail. There are many reasons for this, from disease to accidents. Some organs we can live
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Why does a memory palace work? A memory palace works because our brains are better at remembering images and locations than we are at remembering random information. Nobody really invented the memory palace. It is a technique that has been used for as long as there have been people. Before writing, people had no choice
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Why are there so many camels in Australia? There are so many camels in Australia because they were shipped over to make exploring the interior and laying telegraph lines easier. When you think of camels, you probably think of hot African desert countries, probably around the Sahara Desert. Well, you are not wrong. The country
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What is a supervolcano? A supervolcano is a volcano that has had an eruption, or has the potential of an eruption, that is an 8 on the volcanic explosive index. We have scales to measure the size of hurricanes, the strength of earthquakes, and many other things. Well, there is a scale to measure the
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What happened to the dodo? The dodo went extinct in 1662 because of hunting and the introduction of invasive species. We all know the saying, “as dead as a dodo,” but where does it come from? Well, interestingly, “dead as a dodo” doesn’t appear until 1904 and is probably an adaption of “dead as a
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How did London Bridge end up in America? London Bridge ended up in Arizona, America because it was bought by an industrialist called Robert McCulloch who bought it and shipped it over the Atlantic. The London Bridges that is in America was built in 1831 and it was sold by the City of London in
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