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CONTENTS ON THE COVER 36 BLACK HOLE FEEDING FRENZY The black hole at the centre of the Milky Way is about to consume a giant gas cloud. What will happen next? 45 FAKE IT ON FACEBOOK The science of winning friends and influencing people using social networks 52 SPECIAL REPORT THE FUTURE OF FOOD Lab-grown meat, insect burgers, GM spuds and algae energy bars: take a look at the food you will be eating in the future 36 BLACK HOLE FEEDING FRENZY 61 Q&A Mind-bending answers to your science questions from our team of experts B O Y D E N I N , R O B I D D E R WA, E , B B C I S , C O R B I O S T U D S E C R E T , T H E I C T O R C H : M A G P H O T O 74 INSIDE YOUR MIND The most detailed map of our brains is providing an insight into how we think 95 ALICE ROBERTS In her new show Ice Age Giants, Alice heads back into prehistory to uncover the truth behind the sabre-toothed tiger’s famous fangs 32 SUBSCRIBE TODAY! SAVE 40% Focus (ISSN 0966-4270) is published 13 times a year by Immediate Media Company Bristol, 9th Floor, Tower House, Fairfax Street, Bristol BS1 3BN, UK. Distributed in the US by Evergreen Marketing, 116 Ram Cat Alley, Suite 201, Seneca, SC 296783263. Application to mail at Periodicals Postage prices pending at Seneca, SC and additional mailing of ces. POSTMASTER: Send address changes to Focus, PO Box 669, Selmer, TN 38375-0669. 4 / FOCUS / JUNE 2013
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85 ULTIMATE TEST ICE AGE GIANTS WITH ALICE ROBERTS 95 52 THE FUTURE OF FOOD APPLIANCES OF SCIENCE 83 DISCOVERIES 72 ULTIMATE ODD COUPLES FROM THE ANIMAL KINGDOM FAKE IT ON FACEBOOK 45 FEATURES TECH HUB TO DO LIST 17 UNIVERSE UNCOVERED New insights into the cosmos’s beginnings 19 FROG RESURRECTION How cloning could bring an extinct frog back to life 20 MINING THE OCEAN Is it okay to harvest rare metals from the seabed? 23 PATENTLY OBVIOUS Parachuting smartphones and other bright ideas 24 GLASSES-FREE 3D Coming soon: 3D without the ridiculous face furniture 36 BLACK HOLE FEEDING FRENZY Astronomers are about to watch the Milky Way’s black hole consume a giant gas cloud. So what will they learn? 45 FAKE IT ON FACEBOOK Use science to make your social media profile work for you – gain more friends and influence others 52 SPECIAL REPORT THE FUTURE OF FOOD With the world population rising and resources dwindling, we need to rethink the way we eat. But what are our options? Mealworm quiche anyone? 72 ODD COUPLES Nature’s strangest parings: the bizarre species that thought they’d try sexual dimorphism on for size 74 MIND MAPPING The Human Connectome Project has been mapping the human brain, and the first results are just in… 88 HOW DO WE KNOW? How the Moon formed – the key observations and the people behind them 79 MYO Could this gesture control device mark the beginning of the end for the touchscreen? 81 BILL THOMPSON On why libraries matter 82 BEYOND BLU-RAY Hands-on with the Ultra-HD RedRay 4k Cinema Player 83 APPLIANCES OF SCIENCE Glorious gadgetry galore 85 ULTIMATE TEST We review the next generation of desktop PCs 95 PICK OF THE MONTH Alice Roberts unearths ancient beasts in Ice Age Giants 96 VISIT Cheltenham Science Festival and other great days out 98 WATCH Science on TV, radio and DVD 100 TOUCH New smartphone apps 101 PLAY Remember Me and more 102 READ This month’s science books 06 MEGAPIXEL > 13 REPLY > 29 ROBERT MATTHEWS > 35 HELEN CZERSKI > 61 Q&A > 111 MINDGAMES > 114 STEPHEN BAXTER JUNE 2013 / FOCUS / 5

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CONTENTS

ON THE COVER

36 BLACK HOLE FEEDING FRENZY The black hole at the centre of the Milky Way is about to consume a giant gas cloud. What will happen next?

45 FAKE IT ON FACEBOOK The science of winning friends and influencing people using social networks

52 SPECIAL REPORT THE FUTURE OF FOOD Lab-grown meat, insect burgers, GM spuds and algae energy bars: take a look at the food you will be eating in the future

36

BLACK HOLE FEEDING FRENZY

61 Q&A Mind-bending answers to your science questions from our team of experts

B O Y D E N

I N

, R O B

I D D E R

WA, E

, B B C

I S

, C O R B

I O

S T U D

S E C R E T

, T H E

I C T O R C H

: M A G

P H O T O

74 INSIDE YOUR MIND The most detailed map of our brains is providing an insight into how we think

95 ALICE ROBERTS In her new show Ice Age Giants, Alice heads back into prehistory to uncover the truth behind the sabre-toothed tiger’s famous fangs

32

SUBSCRIBE TODAY! SAVE 40%

Focus (ISSN 0966-4270) is published 13 times a year by Immediate Media Company Bristol, 9th Floor, Tower House, Fairfax Street, Bristol BS1 3BN, UK. Distributed in the US by Evergreen Marketing, 116 Ram Cat Alley, Suite 201, Seneca, SC 296783263. Application to mail at Periodicals Postage prices pending at Seneca, SC and additional mailing of ces. POSTMASTER: Send address changes to Focus, PO Box 669, Selmer, TN 38375-0669.

4 / FOCUS / JUNE 2013

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