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In everyday life, most numbers we use are less than 1000. Sometimes scientists need to use MUCH larger numbers. Here’s an insight into how they do it.

The periodic table doesn’t change very often, which is why it’s worth celebrating when it does. This month, three new elements were inaugurated at a ceremony in Russia. And in Tokyo, a fourth was welcomed to the world. Say hello to moscovium, tennessine, oganessson and nihonium!

Here’s a quick puzzle for you – this square is too wide for its envelope. Can you find a way to make it fit?

Is there life on other planets? It may seem like we’re alone in the universe, but there’s still hope. The race is on to find signs of life on Earth-like planets, which have atmospheres and liquid water on the surface.

The numbers that we use are not the only way to write numbers. You might know how to count with tally marks, or read Roman numerals. But there are plenty of other ways to write numbers. This one comes from the Maya people.

It’s really annoying to get bitten by a mosquito. Your skin often swells, and the bite can itch for days. But in many places in the world, that small bite isn’t just annoying. It can cause a life-threatening disease: malaria.

They’re bright red, a bit crunchy, and they don’t really taste like much. The standard tomatoes you can buy in a supermarket are a bit boring to eat. But if you’ve ever grown tomatoes yourself, you’ll know how sweet and full of flavour they can be. So what’s happened to the humble tomato?

Here are two tricky puzzles, which look strangely similar. Did we somehow get a puzzle inside your puzzle? You will need Scissors Copy of the printouts, which you can download here (two pages) What to do

Written by Rachael Vorwerk Inside a small sample of powder, there hides a gigantic secret. In just a teaspoon of the stuff you’ll find the entire surface area of a football field. It sounds like something from Back to the Future, but for CSIRO scientists it’s the norm.

Many people know how to play solitaire or patience, but there are actually lots of different one-player card games. This version of patience has a bit of addition, and also some tricky strategic thinking.