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Our Microscope column answers the most intriguing science, tech, engineering and maths queries you can throw at us. So, why do voices sound so different on voice recordings?

How do insects choose their favourite weed? Scientists hoping to control weeds want to know if these insects will eat other plants or only their absolute favourite weed.

Have you ever wondered how water striders can walk on water? Wonder no longer!

Take a look around the zoo and you might spot animals using tools to make their lives easier. Otters use stones to crack into shells, and chimpanzees use sticks to fish up termites. But it’s not just about food. Last week, scientists wrote about a whole new example of tool-use in elephants … and one elephant may be capable of pulling a tool-based prank.

We have a gut feeling that you’ll like this highly digestible quiz. Are you hungry for a 5/5?

Do you laugh or smile when playing around with your friends? It turns out bottlenose dolphins do too! Scientists have found that dolphins “smile” to communicate during playtime. And they probably do it to make sure their pals don’t mistake playfulness for aggression.

Why do apple slices go brown? In this experiment, test out the anti-browning abilities of common liquids. And discover the surprising biology of browning!

When a predator swallows their prey, usually that’s the end of the story. But scientists have discovered an eel that can escape from a fish’s stomach!

In this bird-themed quiz, getting a 5/5 sure would be a feather in your cap!

If good things come to those that wait…then these bold oldies are gold! Do you have the patience and wisdom to top this quiz or will you need to wait for the next one?