Editor's note

Despite some mixed reviews, the BBC's new epic co-production with Netflix, Troy: Fall of a City has proved popular with devotees of swords and sandals, who are legion. Scholars tend to discount the historical accuracy of Homer's timeless tale of star-crossed lovers, heroic warriors and the death of a civilisation, but archaeologists are gradually uncovering evidence that something pretty dramatic happened on the site of Troy at around the time the Iliad was set.

Hopefully we've all experienced that warm glow that comes from doing something for someone else. Now science is beginning to discover where that comes from. Here are five reasons why being kind makes you feel good.

Oscars time has rolled around again and millions around the globe will tune in to see their favourite stars dressed up to the nines in the usual orgy of self-congratulation. But more important this year is likely to be the #MeToo protest against the sexism that is still rife in Hollywood. But, for those without the power of a high profile, speaking out can be dangerous if it means depending on a legal system that too often discriminates against the powerless. Here's why.

This week we also learned about prehistoric dental problems, why a 10,000-year clock is a strange idea, why buses might soon be history and what brought the Beast from the East to our shores.

Have a good weekend – and stay warm.

Jonathan Este

Associate Editor

Top story

Graham Bartholomew/BBC/Wild Mercury Productions

Fall of Troy: the legend and the facts

Mariacarmela Montesanto, University of Liverpool

A new BBC series has put Troy back on the map. But how much do we know about this city of legend?

Generosity boosts reward mechanisms in the brain. Andrey_Popov/Shutterstock

Five reasons why being kind makes you feel good – according to science

Jo Cutler, University of Sussex; Robin Banerjee, University of Sussex

The idea that we are only kind to get ahead doesn't seem to hold up, being nice genuinely makes us feel good.

Will Oliver/EPA

Sexual violence may be in the Hollywood spotlight, but there are limits to speaking out

Julia Downes, The Open University

Speaking up and telling the truth is important, but we need to be mindful that it is risky, far from safe for all victims and survivors.

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