Great Women You Should Know: Joan Whittington
You might know about the very important work the Red Cross does all over the world to help people in a crisis. Wherever there is war or natural disaster, their familiar symbol can be seen on flags above makeshift hospitals and parcels of emergency food supplies.
You probably know less, though, about the brave and generous individuals who dedicate their lives to the Red Cross. These people work tirelessly to help those in need and seek no recognition for what they do, but recently we came across the story of a real-life heroine that more people need to know about.
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.
What is Biotechnology?
Perhaps you have heard of the term biotechnology and wondered what it is. You may think you know already – after all, the parts that make up the word are very familiar: bio + technology. You have seen the first part of the word in biology, antibiotics, all sorts of words. It comes from Greek bios, which means ‘life’.
As for technology, it is not just about computers and smartphones. Technology is the practical use of knowledge to create useful things and solve problems. You might like to think of it as tech-knowledge-y. So, taking it one step further, biotechnology is about using biology in technology.
We talked to Alessandra Iscaro, a biotechnology researcher at the University of Florence, Italy, and she explained to us what it is all about.
The Ultimate Guide for Kids to Pack Your Own Suitcase
Welcome to our ultimate guide for kids to pack your own suitcase!
When I was a kid, my parents were Scout leaders and one of their rules was that kids should pack their own suitcases. My mum always said that if the kids packed themselves, they knew what they had in their bag or rucksack and how to find things. And they were able to pack to go home.
Now I have my own kids, I can see exactly what she meant. My kids have been packing their own suitcases since they were little. In the beginning, I’d check to ensure that they didn’t have 12 t-shirts and one pair of trousers for a week-long holiday but now I just remind them to take their toothbrush and any vital pieces of kit.