Science, Nature and Tech

Cellular Communications

When we talk about ‘cellular communcations’, we are not referring to use of a cell phone, because before mobiles or cell phones there was a time when this only meant cell to cell interaction within an organ or tissue. This important cellular behaviour drives diverse functions from contracting cells in your heart muscle to the cells in your nerves.

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Art & History

Does Atlantis Exist, and Where Does the Name Originate?

Around 350 BC, the Greek philosopher Plato wrote about an island situated in front of the Pillars of Hercules, that disappeared under the sea in one day and one night. According to Plato, the capital of Atlantis was built on a hill and surrounded by rings of water, which were joined by tunnels large enough for a ship to sail through. A huge canal connected the outer rings of water to the ocean.
The possible existence of the island of  Atlantis has intrigued scholars and scientists over the centuries.

In 1800s a man called Ignatius Donnelly wrote a  bestselling book called Atlantis, the Antediluvian World. After studying flood history, Ignatius put forward the suggestion that Atlantis was not fiction, but the recording of a natural disaster.

Most modern academics insist that Plato created the story, and was perhaps inspired by events that happened during his lifetime, but that the island never existed.

The subject of dreams, of magical tales and many a search, Atlantis has long captured our imagination. But where did all of this spring from?

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Art & History, Science, Nature and Tech

The Clifton suspension bridge: designed by a woman, built by Brunel

One of the best known landmarks in Bristol, UK, the Clifton suspension bridge first opened in 1864. It was built by the famous British engineer Isambard Kingdom Brunel, but it has recently become public knowledge that it was designed by a woman. Our science editor Sam Gouldson explains who she was and why her work isn’t more widely known.

Who really designed the bridge?

The Clifton suspension bridge was designed by a woman called Sarah Guppy. She was born Sarah Beach in 1770, but when she married her husband Samuel Guppy she took his name. She was one of the great British inventors of her time and the bridge isn’t the only thing she came up with.

What else did she design?

The invention that earned Sarah the most money was her device to prevent barnacles forming on the hulls of ships. Without barnacles the ships would be able to cut better through water and travel more quickly, and the Royal Navy paid her £40,000 for it. That may not sound like much for such a valuable design, but today it would be more than £2.3 million. Her other inventions included a kettle that not only boiled water for tea but could cook an egg and keep toast warm, a candle holder that could keep candles alight for longer and a way of treating boats so that they were more watertight. She also came up with the idea of planting willow and poplar trees on the embankments of new railways, to hold the earth together and prevent landslides.

Why isn’t she more famous?

Sarah lived during the Georgian and Victorian eras. In those times married women weren’t allowed to own property in their own name, and intellectual property such as Sarah’s inventions were no different. Her husband had to file the patents on her behalf, as the property of the Guppy family. The patent for her method of piling bridge foundations in order to create a new kind of bridge was filed in 1811, but she refused to charge others to use the idea because she felt it was for the benefit of the public. Thomas Telford, a civil engineer, used her design to build the Menai bridge in 1826, and when the competition to design the Clifton bridge was announced Sarah gave her work to Brunel. When she wrote to him to suggest the use of willow and poplar trees to reinforce railway embankments, she explained that she didn’t want the credit for her idea because she felt that women “must not be boastful”.

 

Featured image: Sage Solar/Flikr

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School & Career

A Homemade School

Dr Lesley Beeton visited South Africa and visited a school to find out what it’s like to go to school in South Africa.

This is the Drakensberg in South Africa. In English, it means ‘Dragon Mountain’. The children in this part of South Africa face a daily commute to school. In the area where I was staying, the nearest town was Bergville. With the windy roads through the mountains, this journey can take almost an hour. School starts early too, at eight o’clock, so that means getting up around 6 am to be ready for the taxi.

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Written By You

The Fall – A Short Story in Three Parts – Part Three

This is the third of a three part story by 10 year old Alice. Read Part One and Part Two first.

 

My view is hazy, but I can work out the blurry shape of a nurse, standing by my bed. My eyelids shut; the light was stinging my eyes.

“Hello?” The voice is soft. I decide to answer.

“Hello,” I answer.

“I’m Josie,” says the nurse, pulling up a chair beside the bed. “What’s your name?”

“Kieran,” I reply, chewing my lip.

“Well, Kieran, you’ve been through a lot,” she says. She feels my forehead. “You had a raging fever you know. How do you feel now?”

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