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Cryptic crossword #112: Child starts to like eminent chemist (5)

22 June 2023

Challenge your brain by solving New Scientist's weekly crosswords on your mobile, tablet or desktop

2H57CRH Real zero no net zero placard, Global Day of Action for Climate Justice demonstration, London, UK. 6th November 2021

Net-zero aim shouldn't be used to delay action on carbon emissions

21 June 2023

For executives or politicians with an eye on the next financial quarter or electoral cycle, net zero has clear appeal. But we shouldn't use it as a way to delay action on tackling climate change

Bengal cat washing itself on bed; Shutterstock ID 1123136123; purchase_order: -; job: -; client: -; other: -

This week’s new questions

21 June 2023

Why do cats wash themselves a lot, while dogs don’t? And if 21st-century babies wean on a globalised diet that has only recently been available to them, what did babies wean on in prehistoric times?

JMD2WX refreshing lemonade drink with mint lime lemon in garden

Why did ice in my drink in Spain take longer to melt than at home?

21 June 2023

The rate at which ice cubes melt depends on the drink temperature, not the ambient temperature, say our readers, who also question the number of variables in the questioner’s observation

This mosaic of Mars is a compilation of images captured by the Viking Orbiter 1. The center of the scene shows the entire Valles Marineris canyon system, more than 2,000 miles (3,000 kilometers) long, 370 miles (600 kilometers) wide and 5 miles (8 kilometers) deep, extending from Noctis Labyrinthus, the arcuate system of graben to the west, to the chaotic terrain to the east.

If humans colonised Mars, how would they calculate time?

21 June 2023

Humans would have to adjust to the slightly longer Martian day, say our readers, who also point out that time is a human construct, anyway

Puzzle #227: How did Max the Magnificent pull off his card trick?

21 June 2023

Can you solve this week’s logic puzzle, A great deal of magic? Plus the answer to puzzle #226

Why medical studies of diverse populations benefit humanity as a whole

21 June 2023

We in science and medicine aren't immune to the biases that lead to discrimination. It's time to take concrete steps to put science on a fairer and more productive path, say Michal Elovitz, Stephen Quake and Hannah Valantine

What happens if you give Froot Loops to a rat and study its penis

21 June 2023

Feedback lifts the lid on a study into stressed rats and the effects of 'comfort food' on their 'penile morphology', and explores an essay which sets out to debunk the Dunning-Kruger effec

Ostuni, Puglia, Italy - 05 20 2022: Preparation of typical handmade pasta called

The easy way to make pasta at home

21 June 2023

You don’t need eggs, flour and special gadgets to make your own pasta – semolina, water and a good knead will do it, says Sam Wong

Best science books and science fiction stories for kids

21 June 2023

From brightly coloured baby books about frogs to early ecology for 10-year-olds and dark teen sci-fi set on the ocean floor, here are the best books for young minds