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It’s the middle of winter in our part of the world. And if you live in southern parts of Australia, you might think it’s a bit chilly. But there are places on Earth that are much colder. New research has found places in Antarctica colder than we have ever measured before!

What’s the faintest touch you can feel? A feather on the back of your hand, a whispered breath in your ear? Scientists from CSIRO and Griffith University just built a device that feels much lighter touches – in fact, it’s the most sensitive force detector on the planet!

When you’re on a bus, corners can push you sideways. But what does it do to a balloon? Grab a balloon and get on board to learn a thing or two about inertia.

Built more than 4500 years ago, you’d think there was nothing left to discover inside Cairo’s Great Pyramid of Giza. Think again. Scientists have recently discovered a new chamber deep in the heart of the tomb, all with the help of starlight.

Do you have friends from the United States? Have you ever found a recipe on the internet with ridiculously high oven temperatures? Do you have a grandparent (or great grandparent) who doesn’t like the ‘new’ way of measuring temperatures? You might need our quick guide to the Fahrenheit scale.

Time for an Easter trick! There are lots of eggs around at this time of year, but this one is sure to raise some eyebrows. And when you’re finished, you can get your parents to help you cook your green egg, so you can gross out your entire family!

Perched high atop a giant shiny dish, sits a strange top hat. This hat is filled with high pressure steam, and it’s the secret to efficient solar power that can work even after the Sun sets. Welcome to the world of concentrated thermal energy.

When you’re installing solar panels, it’s important to point them at the Sun. But the Sun isn’t always in the same place – it moves across the sky over the course of a day. If you can aim the panels towards the Sun as it moves, they can produce up to 40 per cent more power…

In the latest issue of Double Helix magazine, we feature solar powered cars racing from Darwin to Adelaide. They zoomed to the finish line last week. The winner is Dutch team Nuon with their car Nuna 8!

Written by Beth Askham Make your own climbing frog, using the power of friction. You will need A 20 cm x 20 cm piece of cardboard Two 5 cm long pieces of drinking straw String Sticky tape Scissors Coloured pens, pencils, crayons, paints or textas Other decorations What to do On your piece of cardboard…