W E L C O M E (cid:54)(cid:72)(cid:89)(cid:72)(cid:81)(cid:3) (cid:80)(cid:82)(cid:71)(cid:72)(cid:85)(cid:81)(cid:3) H I G H L I G H T S (cid:90)(cid:82)(cid:81)(cid:71)(cid:72)(cid:85)(cid:86) Issue 168 PAGE 26 28 GOLDEN HEART Inside the quake-proof Taipei 101 tower G A M S K 44 WIND WIZARDS R O How a turbine harnesses W energy from the air T I W O H M O C . T E N E R 78 PASTA PROCESS U T Making pasta on an U industrial scale F @ S K R O W SUBSCRIBE T I W O H NOW G A (cid:361)(cid:55)(cid:75)(cid:76)(cid:86)(cid:3)(cid:80)(cid:82)(cid:71)(cid:72)(cid:85)(cid:81)(cid:3)(cid:90)(cid:82)(cid:81)(cid:71)(cid:72)(cid:85)(cid:3)(cid:75)(cid:68)(cid:86)(cid:3) M GO TO S K he photo above is of the Rhodian deer (cid:69)(cid:72)(cid:72)(cid:81)(cid:3)(cid:68)(cid:3)(cid:90)(cid:82)(cid:85)(cid:78)(cid:3)(cid:76)(cid:81)(cid:3)(cid:83)(cid:85)(cid:82)(cid:74)(cid:85)(cid:72)(cid:86)(cid:86)(cid:3) PAGE 18 FOR R O T statues that flank the entrance to (cid:73)(cid:82)(cid:85)(cid:3)(cid:82)(cid:89)(cid:72)(cid:85)(cid:3)(cid:20)(cid:23)(cid:19)(cid:3)(cid:92)(cid:72)(cid:68)(cid:85)(cid:86)(cid:362) GREAT DEALS W Mandraki harbour in Rhodes, Greece. T I W But the picture is missing something: an O iron-and-brass statue, 33 metres tall, of the Greek H @ god Helios that was known as the Colossus W H A T W E ’ R E A N T I C I P A T I N G of Rhodes. Some historians believe that Reading right now E this ancient world wonder stood N sentinel over the entrance to the Can’t wait I Z harbour for over 50 years before it A Looking forward to it G collapsed in an earthquake in 226 BCE. A M We’ve built much bigger and more Cool topic S impressive constructions in the K That’s interesting R last 500 years, but will their O Which page? W legends stand the test of time T like the Colossus? If you turn SEVEN MODERN HAZARDOUS MOLES, FRECKLES SUPER DRONES FOSSIL FUELS VS HOW PASTA I WONDERS ASTEROIDS AND SKIN TAGS ALTERNATIVE ENERGY IS MADE W to page 26, you can decide for O yourself whether the seven H structures we’ve chosen are : worthy of being wonders. Enjoy! S U W (cid:37)(cid:72)(cid:81)(cid:3)(cid:37)(cid:76)(cid:74)(cid:400)(cid:86) O L EDITOR NIKOLE SCOTT AILSA DUNCAN L PRODUCTION EDITOR SENIOR STAFF WRITER STAFF WRITER SENIOR ART EDITOR O F y ett FOR EXCLUSIVE HHIIWW NEWS AND OFFERS, SIGN UP TO OUR MAILING LIST HOWITWORKSDAILY.COM/NEWSLETTER © G 3 I N S I D E 26 7 MODERN Issue 168 WONDERS SPECIAL 58 Anti-satellite weapons Discover the powerful new 26 Seven modern technology that’s capable of knocking wonders of the world satellites out of orbit from the ground Take a tour of the planet’s most SPACE awe-inspiring construction marvels SCIENCE 60 Hazardous asteroids There’s a real possibility that 36 Moles, freckles Earth could be hit by an asteroid, but and skin tags it’s an avoidable disaster What makes these unique patterns 66 Inside the Vulcan form on your skin? Centaur rocket 40W hy mirrors are One of America’s newest space launch so reflective systems uses a new fuel and has How a combination of glass and metal reusable parts can reflect light so perfectly HISTORY ENVIRONMENT 68 WWII’s weirdest 42 Fossil fuels vs inventions alternative energy Take a closer look the strange stuff the The environmental cost of petrol and Allied and Axis powers came up with to diesel is high, but alternative fuels could take on their adversaries alleviate the impact on our planet 74 Inside the first 48W hat are gastropods? modern computer These slimy animals have Why the Difference Engine wasn’t twisted shells and topsy-turvy insides finished in time to make history 50W hy is grass green? 78 How pasta is made The same molecules that feed The surprisingly scientific Win! grass also give it its colour process behind this popular food staple R E G U L A R S TECHNOLOGY TRANSPORT 06 Global eye ONE OF TWO AIRFIX Science and tech news from 52 Super drones 80 What is a around the world MODEL BUNDLES, How unmanned flying vehicles turbocharger? 22 Wish list are changing the world How these devices can increase engine WORTH £100 The latest tech and gadgets speed and acceleration, or make them for photography more eco-friendly PAGE 82 84 Braindump MEET THIS ISSUE’S EXPERTS Your questions answered 90 Book reviews 92 Brain gym Give your brain a workout with our puzzle pages 94 How to… MIKE LAURA MARK DR ANDREW Test for ocean acidification JENNINGS MEARS SMITH MAY Mike is a freelance Biologist Laura A technology and Andrew has a PhD 96 Letters technology journalist escaped the confines multimedia in astrophysics and Have your say who is fascinated of the lab to the specialist, Mark has 30 years in public with gaming, rigours of an office written tech articles and private 98 Fast facts futuristic technology desk as a keen for leading online industry. He enjoys and motorsport. He science writer and and print space writing and is dreams of becoming full-time software publications the author of a rally driver. engineer. for many years. several books. 4 50 48 60 52 74 SUBSCRIBE NOW 58 GO TO PAGE 24 FOR GREAT DEALS 36 5 6 Dental bacteria Along with saliva, bacterial secretions form a sticky biofilm that accumulates as plaque. Bacteria are embedded between teeth and feed on the sugars that pass through our mouths. The bacteria release an acid that corrodes the enamel coating of our teeth. Without regular brushing and a proper oral hygiene routine, decay can set in as the enamel is dissolved, leading to gum disease. y ett G © 7 8 Burning blue Kawah Ijen spews sapphire lava when it erupts. The unusual nature of its eruptions are the result of large quantities of sulphur gas. When molten rock emerges from deep below Earth’s crust at high pressures and temperatures, it’s joined by sulphur gas that also rushes to the surface. When this sulphur gas, heated to around 600 degrees Celsius, reacts with atmospheric oxygen, it burns blue. y ett G © 9 10