Hi, it's Nicola Cocklin.

Young people have been making history for years, but we don't often hear about them.

My brand new series on BBC Sounds sets out to put this right.

In history's youngest heroes, I'll be revealing the fascinating stories of 12 young people

who've played a major role in history and who've helped shape our world.

Like Audrey Hepburn, Nelson Mandela, Louis Braille and Lady Jane Grey, history's youngest heroes with me, Nicola Cochlin.

Listen on BBC Sounds.

Hello, I'm Margaret Macmillan, and in my Rees lectures, I'm exploring the relationship between

humanity and war.

In the fifth podcast in this series,

I'm looking at how we think about an imagine war,

about how the arts can create beauty out of war

and how, of course, they also show its horrors.

Welcome to the fifth and final wreath lecture by the Canadian historian Professor Margaret Macmillan.

This is very much a homecoming for Margaret, and what a place to end.

We are here in the architecturally breathtaking Canadian War Museum in Ottawa.

And here in this huge Le Breton Gallery, we are surrounded by tanks in a place packed with weapons from the 18th century to the present day.

In fact, there is a warplane hovering rather ominously over our heads.

Here lies one of the great paradoxes of war and how we feel about it, because I won't like

it is exciting to be here, to be surrounded by all of these things, even though we know that

these are weapons that were designed and possibly even used to kill people.

Professor Margaret McMillan has called her lecture series The Mark of Kane.

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