BBC Science Focus

Q&A

YOUR QUESTIONS ANSWERED

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Our experts answer your questions. This month: How did tortoises reach the Galápagos Islands? How many stars are in the Milky Way? Why do we have different blood types? Why do ice cubes crack when you put them in water? Can plastics be recycled an infinite number of times?

... HOW MANY STARS ARE IN THE MILKY WAY?

... HOW DID TORTOISES REACH THE

GALÁPAGOS ISLANDS?

... WHAT CONNECTS CORNED BEEF AND THE TITANIC ? ... DO SUBATOMIC PARTICLES HAVE A COLOUR?

... WHY DO WE HAVE DIFFERENT BLOOD TYPES?

... WHY DO ICE CUBES CRACK WHEN YOU PUT THEM

INTO WATER?

... WHAT IS THE ‘GOLDILOCKS ZONE’?

... CAN YOU RECYCLE PLASTICS AN INFINITE NUMBER

OF TIMES?

... SHOULD I PUT HONEY ON BURNS?

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questions@sciencefoc­us.com

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@sciencefoc­usQA

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