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Farmer Wallace packages his eggs in cartons that hold a dozen eggs. In March, he sells 5 standard orders of eggs to the local grocery store. Each standard order consists of 4 grosses of eggs. A gross is 144 eggs. How many cartons of eggs did Farmer Wallace sell?

CSIRO is marching in Mardi Gras this weekend (2 March)! To celebrate the kaleidoscope of human diversity, we’re flying this colourful rainbow quiz.

They’re cute, colourful and … clever? Scientists just discovered that common clownfish can count! Or at least, they can recognise the number of stripes on other fish. And it helps them pick their friends from foes.

Don’t have any sour candy on hand? Make something even sweeter! These glitter grapes come in all kinds of fruity flavours.

Catalina won a game show prize! She spent 3/4 of it on a trip into space. She spent 2/3 of her remaining money climbing Mount Everest. Finally, she donated the last $100,000 to wildlife. How much did she win?

2024 is a leap year and February 29th is only a hop, skip and a jump away! So, it’s clearly time to celebrate with a leaps and bound-iful quiz. Don’t jump to conclusions and you’ll be sure to land a 5/5!

Palaeontologists have wondered for over a hundred years – how did dinosaurs evolve flight and become birds? To find the answer, researchers built a robot dinosaur!

Let’s make a mini greenhouse! This self-sustaining little ecosystem will look fantastic on your desk or in your bookshelf.

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!

Artificial Intelligence (AI) can create incredible images just from short, text-based prompts. AI’s ability to create imaginative pictures is perfect for the fiction story in each issue of Double Helix. So, we are carefully using an AI called Midjourney to generate these illustrations.