Editor's note

Good morning and happy weekend. It’s time to take a rest, but that’s no reason to let your brain go all flabby, so we’ve decided to set you a weekend challenge. Mathematician Gihan Marasingha has devised a brutally difficult question about tennis to get your grey matter working. You have until 6.30am UK time on Monday to work it out, so you better get cracking.

In the latest episode of The Anthill podcast, we’re exploring the theme of inheritance – from the money we’re allowed to leave behind when we die to the characteristics we pass on to our children – plus a surprising revelation about hippos.

Brand new research tells us that it takes around 3,000 litres of water to produce the food you’ll eat today. It looks like eating less meat could dramatically cut this hefty environmental footprint. And, curiously, so could drinking more wine.

This week, our colleagues around the world have brought us news of how milk came to take centre stage in the battle over NAFTA and why everyone’s super excited about a telescope in Senegal.

Enjoy!

Laura Hood

Politics Editor, Assistant Editor

One racket of many. Shutterstock

Maths quiz: a very problematic game of tennis

Gihan Marasingha, University of Exeter

Can you outsmart our maths mastermind?

Gennadiy Solovyev/Shutterstock.

Anthill 29: Inheritance

Will de Freitas, The Conversation; Annabel Bligh, The Conversation; Gemma Ware, The Conversation; Jack Marley, The Conversation

From wealth, to the natural world, to genes and intelligence, a podcast exploring the theme of inheritance.

Alexander Raths / shutterstock

Meat-free diets could cut our ‘water footprint’ in half, say scientists

Ben Keane, University of Sheffield

Scientists have calculated the 'water footprint' of different diets across the UK, France and Germany.

A telescope pointed at the skies above Senegal to capture the stellar occultation. François Colas, Observatoire de Paris, Insititut de Mécanique Celeste et de Calcul des Ephémérides

Why NASA chose Senegal to find out more about an asteroid in outerspace

David Baratoux, Institut de recherche pour le développement (IRD)

Senegal has made great strides in astronomy and planetary sciences in recent years.

Why are so many teachers quitting or off with stress? shutterstock

Survey: state school teachers say much of their work is meaningless

Jude Brady, University of Cambridge

Private school teachers are generally happier than state school teachers, but not for the reasons you might think.

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