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Double Helix Extra readers really got busy with brainteasers in 2024! Let’s do a count down of your top 5…

Australian farmers produce a whopping 6.2 billion eggs each year. Unfortunately, most of the resulting eggshells end up in landfill. Australian scientist Manickam Minakshi Sundaram hopes to change this with a breakthrough use for eggshells: batteries!

How many times have you thrown something in the bin and hoped that it was the right thing to do? We all want to do the right thing and want to put the right things into the bin. But can they really be recycled?