Unsung Heroes – Lollipop Men and Women
Is there a Lollipop Man or Woman on your road to school? Do you know his or her name?
When I take my children to school, we walk if we can, because the parking situation near the school is a bit difficult. On our way we cross the road where the Lollipop Man stands guard.
He isn’t particularly talkative, but is friendly and helpful. It has been warm these past days, and still he stands, in his reflective jacket and ear-muffed reflective hat. I am waiting for him to take the hat off, he must be sweltering under there. Perhaps he has a lighter hat in his cupboard, which doesn’t get worn until summer.
What is the Big Deal About Finding Richard III?
As skeleton found under a car park in Leicester has been identified as that of King Richard III, who ruled England from 1483 to 1485. Richard has been pictured as a tyrant king. There’s a story that Richard killed his own nephews, the legendary ‘princes in the tower’ in order to usurp the throne.
Nearly a century after Richard’s death, Shakespeare describes Richard as a ‘bottled spider’, a hunchback. Since Shakespeare’s time writers and artists through history have imagined Richard as a terrifying figure, whose physical disabilities are signs of his cruel inner nature.
Some historians argue that Shakespeare must have been writing propaganda to please his queen, Elizabeth I, whose grandfather Henry VII defeated Richard in battle. These historians argue that Richard’s ‘hunchback’ is an insult made up by Shakespeare, but until now, we haven’t been able to know what the truth is.
What is The Point of Learning English?
Have you ever sat in a Maths class wondering why you will ever need to be able to do long division without a calculator? Or silently cursed your Geography teacher while learning about the formation of oxbow lakes? And History? That’s all in the past and irrelevant, isn’t it?
In this series of articles, we will look at some of the subjects we learn at school, and try and answer the question: What’s the point in learning this?
Last time we looked at uses of Maths, both in day-to-day life, and for your future career. Today we will focus on learning English. Once we have learned how to read, write and spell, what is the point? Will we ever need to quote Shakespearian sonnets? And who, other than writers, needs to be able to write stories and poems?
A Trip to Mars!
Imagine being able to catch a flight to Mars as easily as we travel to another country – that was the idea behind the Trip To Mars session I attended at the Cheltenham Science Festival. It was conducted by Dr Suze Kundu and Dr Simon Foster and presented as a pre-flight safety briefing, with both of them dressed as pilots! There were a lot of humorous moments and sci-fi references but also some great science.
Suze and Simon suggested that in the future, flights to Mars could be far quicker than they are now, and explored how some of the bigger problems could be overcome. For example, the Sun’s magnetic field deflects a significant proportion of the cosmic radiation that could be harmful to humans on Earth; as spaceships travel further away from the Earth and Sun they will have less protection because the magnetic field weakens. To combat this it’s possible that spaceships will contain or be covered with large and powerful magnets, to produce the same deflective effect. This would have the added advantage of also deflecting radiation from solar flares.
Spaceships journeying to Mars would travel at such speed that even tiny fragments of rock and dust could be damaging to the hull. To combat this, and also the heat generated when the spaceship passes through an atmosphere, Suze and Simon discussed the possibility of spaceships being coated in aerogel. This amazing material is a solid formed from silicone dioxide but is 98% air; this means that it is extremely light but also strong. Its melting point is 1,200°C (equivalent to asbestos) and it is a wonderful insulator. Because it consists of large pockets of air between thin layers of silicone dioxide, any dust or rock fragments that hit it would be slowed and stopped before they could penetrate the aerogel completely.
Suze and Simon also discussed the possibilities and problems with cryostasis. Theoretically this is when a person’s body is cooled to temperatures so low that they enter hibernation, ideal for long journeys through space. Unfortunately our technology isn’t advanced enough to do this at the moment; any attempt would result in the cells rupturing and the person dying. But in the future it will be possible, perhaps after the person’s DNA has been altered slightly so that they can produce antifreeze proteins like some species of wasps and turtles.