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Hello, I'm James Reynolds. Welcome to BBC Earth Conversations on the Earthquake in Turkey and Syria.

Every once in a while, every few years, nature reminds us of its most destructive power.

I'm sure many of you share the thought that so many of us here working in the BBC have had,

that it is so hard to comprehend the devastation that this earthquake has caused.

Among our conversations this week are rescue workers in both countries.

I've been at war zones, I've been at disasters before, and this is unprecedented.

The size, the scale, the damage. Yesterday I was in Nordic, a town in the province of Ghazi Antep,

unbelievable, 70% of the buildings were rubble.

The image of neighbourhoods, flattens down into concrete and rubble is one that will be so hard to forget.

Together with the desperate search to save lives there, have been a few moments of sheer relief.

When rescuers pull someone out of the rubble, often a young child, but there have also been so many haunting, haunting moments.

Our conversations in today's programme are obviously difficult and they are upsetting.

You probably would expect that, but I just wanted to warn you anyway.

We really hope that by sharing personal stories from the past week, we can all better understand

and appreciate some of the individual stories and what it's been like for a few of the many millions of people

who have been affected by the earthquake.

We begin with the moments of the quake itself.

The first major tremor struck in the early hours of Monday morning near the town of Ghazi Antep in southeastern Turkey.

It was followed by aftershocks that were almost as powerful.

...