This is The Guardian.

Towards the end of the rainy season in the Brazilian Amazon,

what would be the start of spring in the northern hemisphere?

I went on a rainforest ramble with a group of students and a scientist

named Celia. It was about 8pm. Above us, the sky was full of stars and lightning occasionally

flashed in the distance. Our group met at the side of a road. In our ears, the magnificent cacophony of the rainforest, which comes to life after dark.

We switched on our torches and headed into the forest.

I wouldn't normally dream of wandering through the undergrowth at night.

There are too many creatures that can bite or sting.

But our guide, Celia, does this all the time.

So I followed.

It was magical, like entering into the body of an immense living being.

So we're just a few hundred meters from the road. We're walking through the forest.

And the guide, Celia, is saying we need to go to the Brazil nut tree.

Under a Brazil nut tree, everyone was asked to turn off their torches and shut their eyes.

Just imagine, for a moment, being in the vast expanse of the Amazon rainforest, home to snakes and

spiders, bats and jaguars, and closing your eyes.

When we opened them again, our vision began to adjust to the darkness.

Thoughts of pale green light started to appear.

As the group wandered through the forest,

staring intently at the undergrowth,

one by one, we found what we had been looking for, what Celia had guided us to.

...