Science, Nature and Tech

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.

Science, Nature and Tech

When Two Girls Sent Their Cat into Space

Have you ever let go of a helium-filled balloon and let it soar into the sky? Maybe you’ve even tied a message onto the string, with your contact details and hoped that someone would let you know where it landed when it popped. These awesome girls went a big step further than that. They sent a balloon into SPACE, with a couple of Go-Pro cameras attached, in a really cool science experiment.

Home, Health & Style, Popular

8 Supermarket Tricks to Make Your Parents Spend More

You might have noticed that many supermarkets have a similar layout. This is no coincidence. Researchers have spent many years working out how to set out the store in order to get customers to spend more! See how many of these supermarket tricks you recognise, the next time you go shopping with your parents!

Huge Trolleys

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Shopping trollies are deliberately MUCH larger than needed for a weekly shop, which encourages customers to buy more. In fact, they’ve been getting bigger and bigger in the past few years.

The Bakery at the Entrance

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That smell of freshly baked bread? Not only does it make you want to buy a yummy loaf, it also makes you hungry. It is well known that if you go shopping when you are hungry, you buy more!

Tempting Fruit and Veg

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After the bakery, comes the fruit and veg section. This often strikes me as a bit daft – by the time I get around to tins and packets of pasta, my salad is squashed at the bottom of the trolley! The bright colours tempt customers, and lots of supermarkets present fruit and veg in baskets or crates, to make it seem like they’ve come straight from the farm! Once you’ve filled your trolley with healthy produce, you’ll feel better about the packets of biscuits and crisps that come later!

Essentials Around the Store

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Just popping in with your parents to quickly to pick up some eggs, or milk? You might notice that these essentials, and others like sugar, salt and flour, are spread around the store. The supermarket planners want you to walk around the store as much as possible, passing all those tempting special offers at the end of the aisles.

End of Aisle Offers

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The shelves at the end of the aisles are the ones that we pay most attention to, and so supermarkets stack their special offers there, to persuade you to buy them. These are often things like fizzy drinks, that you might not normally purchase.

Loyalty Cards

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Supermarkets don’t just give their customers loyalty cards to encourage them to come back to their stores. They also use the data (information) collected to target their advertising better. If your parents have a loyalty card, have a look at the next letter they receive to see if they are giving discounts on products that your family often buy. Have a think about what the supermarket would know about your family – if you have a pet, when you have birthdays (e.g. if you buy a cake in the store), what toys you like, which interests you have (e.g. your parents bought a magazine about traveling to Italy).

Sweets at the Checkout

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Ok, hands up if you’ve ever asked your parents for sweets when you were at the checkout! In Germany, they have a word for this – Quengelware. The word is made up of “quengeln” which means “to whine” and “Ware”, which means products. Products that make kids whine or grump at their parents, who are fed up with the hassle of shopping and give in to their kids’ demands! Some supermarkets now advertise that they have lanes without sweets, so that parents can avoid this argument.

Kids’ Products at Your Eye Level

Talking of kids in supermarkets, did you ever notice that products aimed at kids are displayed at your eye level? The cheese strings are placed at that height in the hope that you will ask for them!

How many of these supermarket tricks did you recognise? Next time you go shopping, take a good look at how the store is laid out and see if you can find some more.

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School & Career

A World at School – Education for Everyone

We are lucky in the western world. We are entitled to a free education until the age of 18. You might not always feel like going to school, but you are able to learn about loads of different topics, which will help you find a job when you are older. Not only that, but school can be great fun too – we bet you have a favourite subject, that you love to learn about.

A lot of children across the world don’t have this opportunity. Sometimes it is because the children are too poor to be able to afford to go to school, and there is no way they can pay for uniform, travel and schoolbooks. Sometimes it is because the government doesn’t provide free education where they live. Sometimes it is simply because they are girls. You might have seen the story of the girls in Nigeria who have been kidnapped, because they wanted to go to school – we are all hoping very much that they are soon home with their families. Now more than ever, it is vital to ensure children can go to school safely.

Science, Nature and Tech

Science News – Solar Storms Due to Hit Earth

This weekend the Earth is due to be hit by a pair of solar storms that might affect radio and satellite communication. But how and why does this happen?

What Does Solar Mean?

Image by Nasa

Anything that is related to a sun is commonly described as being solar. Our sun is a typical medium-sized yellow star which is about 5 billion years old. Its surface temperature is about 5,500°C, but even that isn’t as hot as its superheated centre. Some parts of the sun’s surface are cooler, with a temperature of between 2,700–4,200°C, and these appear darker when viewed through specialised telescopes. These cooler patches are caused by fluctuations in the sun’s magnetism and are called sun spots.