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Science Illustrated

Science Illustrated Issue 73

Science Illustrated delivers natural science, break through discoveries and an understanding of the world for the entire family. Packed with stunning photography and in-depth editorial it’s a visually spectacular gateway to the world looking into the beginning of life to distant objects in the universe.

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Nextmedia Pty Ltd
8 Issues

in this issue

1 min.
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SAVE UP TO $40.84! Only $65 for 1 year! That’s 8 issues of SCIENCE ILLUSRATED for just $8.12 a copy (normally $9.99)! AUSTRALIAN Every issue of Australian Science Illustrated includes news and features on: • News science discoveries• Astronomy, cosmology and the universe• Plant and animal biology• Archaeology and palaeontology• History and culture• Green technology and renewable energy And much more! Subscribing to Australian Science Illustrated gives you these benefits! ✔ Up to 25% OFF the retail price!✔ Never miss an issue!✔ Get the latest issue delivered direct to your door!✔ A subscription to Science Illustrated is the perfect gift! ORDERING YOUR SUBSCRIPTION IS EASY mymagazines.com.au Call 1300 361 146 or 02 9901 6111 Mail Science Illustrated Locked Bag 3355 St Leonards NSW, 1590…

2 min.
test yourself

ANSWERS ON PAGE 4 BREAK THE CODE Solve the three problems on the left to find a combined code phrase. Turn to page 4 for the answers and the meaning of the phrase. CODE QUESTION 1 1What word is written in code here? CODE QUESTION 2 2 Prometheus is not standing beside Perses or Atlas. Helios is shorter than Perses. Who is far right? CODE QUESTION 3 3 Place the numbers 1-12 so that the total for each of the 3 large ovals and the central circle is 39. Which number belongs in the yellow circle? NUMERACY 4 Which number belongs in the empty space? 5 Place numbers in the 6 empty spaces, so the total of each piece of pie is the same. The totals of the 3 circles must also be the same, but different from that of the…

1 min.
army bivouac: nomadic ants build living castle

Army ants switch between living in a colony and being nomads in search of a new home. When in their travel mode, they need to protect their resting queen en route, so the colony’s soldiers stand on top of each other, interlocking their legs to form a structure that acts as a temporary nest. When daylight comes, the army moves on to new battlefields, consuming up to 500,000 creatures per day on the way. The brave photographer here was nominated in the Wildlife Photographer of the Year competition for this image, taken in Costa Rica. WILDLIFE PHOTOGRAPHER OF THE YEAR, Photo // Daniel Kronauer…

1 min.
plasma on parade: vast red sprites haunt the sky

They tower high in the sky, like huge jellyfish with extended tentacles. These red sprites appear above active thunderclouds and can grow up to 100km high. But they light up the sky for only a few milliseconds, so it has proven an almost impossible task to capture good photos of this mysterious phenomenon. The red sprites consist of ionised plasma, and they are triggered by powerful electric charges in the thunderclouds, from where the flashing light cascades downwards for those few milliseconds in an electrical avalanche.…

1 min.
red spread: scientists are learning to farm on mars

With water such a scarce resource on Mars, the surface offers nowhere near the nutrient-rich environment that plants enjoy on Earth. Several research projects are developing crop-growing methods that could feed future Martians. Scientists from the Czech University of Agriculture have produced this system in which plants are sprayed with nitrogen-based nutrients, with all water reused. The project could also benefit farmers who are facing increasing shortages of water here on Earth. EPA/RITZAU SCANPIX, Photo // Martin Divisek…

2 min.
the face of denisovan humans

EVOLUTION A jawbone, some teeth, and a little finger bone: those were the only fragments available to scientists from Stanford University in the US who were working to establish the likely physical appearance of Denisovans – the human species that co-existed with Neanderthals and Homo sapiens up until at least 40,000 years ago. Thanks to the successful extraction of DNA, they now have a theory which can compare the Denisovan skeleton and skull with the bone structure of Neanderthals and modern man. Scientists examined DNA from the small finger bone, which came from a Denisovan girl who lived 40,000 years ago. Molecules known as methyl groups on DNA strands can identify whether a gene is active or not, allowing the scientists to identify which genes were active in Denisovans and to compare…