The Forest That Breathes Rain

The fog came off the trees before the sun did.

Maya felt it before she saw it. The air on the dock was already wet, but this was different, a thickness rising off the forest across the river like steam off soup. It climbed. It did not drift sideways the way fog was supposed to. It went straight up, in slow ropes, out of the green.

"The boat is late," said Aunt Rosa, not looking up from her phone. She was a botanist and she was annoyed, and the two things seemed to be connected. "Three hours. We measure ten thousand trees and a man cannot read a tide table."

Soren had his notebook open on his knees. He licked his finger and held it up. No wind. He frowned, because the fog was moving anyway, and moving wrong, and a thing that moves without wind is a thing worth watching.

"It's coming out of the leaves," Maya said.

"Fog comes off water," said Soren. "The river's right there."

"Then why is more of it over the trees than over the river?"

He looked. She was right. The river lay flat and dark and almost dry of mist. The forest behind it was smoking like a hundred small fires that gave off water instead of smoke.

Soren put his palm flat on the dock board. The wood was warm already. He pressed his other hand against a leaf hanging over the rail, one of the big waxy ones, and held it there. When he took his hand away the underside of the leaf was beaded, and the back of his hand was damp, and he had not touched any water.

"It's sweating," he said.

"Trees don't sweat."

"This one is."

Maya pulled the leaf toward her face. The little dots on the underside were almost too small to see, like the pores on her own nose. Water was coming out of them. Not dripping. Breathing out, the way her breath fogged a cold window, except the morning was hot and the leaf was breathing anyway.

Aunt Rosa glanced over. "Transpiration," she said, in the flat way adults say a word to end a conversation. "They pull water from the roots, it goes out the leaves. A big tree moves hundreds of liters a day. Boring. The boat is what is interesting, and it is not here."

She went back to her phone.

Maya was not done. Hundreds of liters. She looked at one tree. Then she made herself look at all of them, the whole far bank, the green going back and back until it stopped being trees and became one solid breathing thing that ran past the curve of the river and kept going where she couldn't see.

"How many trees," she said quietly.

"In the Amazon?" Soren turned a page. "Aunt Rosa said somebody counted. Three hundred and ninety billion."

Maya watched the ropes of mist climbing. Hundreds of liters, three hundred and ninety billion times, all of it going up, all of it at once, every morning the sun came up.

"Where does it go," she said.

Soren tipped his head back. The mist did not stop where the trees stopped. It kept rising, thinning, smudging, until it reached a layer where it stopped being invisible and turned white and flat and held still.

"It turns into that," he said.

The clouds. There was a ceiling of them forming over the forest, low and getting lower, and there had been none when they arrived. The sky over the river was still clear blue. The sky over the trees was filling with cloud while they watched, the way a glass fills under a tap.

Maya stood up.

"The trees are making the clouds," she said.

"That's the water from the leaves." Soren was writing fast now, the pencil scratching. "It goes up, it gets cold, it bunches up into cloud. Same as anything."

"No," said Maya. "Not same. Listen." She pointed at the cloud, then down at the trees, then up again, like she was drawing a circle in the air and couldn't get her hand to close it. "The clouds rain. Where do they rain?"

Soren stopped writing.

"On the trees," he said.

"On the trees," said Maya. "Which drink it. Which sweat it out. Which makes the cloud. Which rains on the trees."

They both looked at the green wall. It was not waiting for weather to arrive from somewhere else. It was not under the sky. It was making the sky and then standing in its own rain and then making it again, and it had been doing this every single morning for longer than there had been people to count the trees.

"It feeds itself," Soren said. His voice had gone careful. He tested it the way he tested everything, turning it over. If the trees made the rain, and the rain made the trees, then you could not say which came first, and you could not pull one out without the other coming loose. "If you cut enough of them," he said slowly, "there's less breathing. Less breathing, less cloud. Less cloud, less rain. Less rain." He didn't finish.

"Fewer trees," Maya said. "Which breathe less."

Neither of them liked the shape of that. But under it was the other shape, the first one, the impossible ordinary thing they had just watched happen with their own eyes on a Tuesday before breakfast. A leaf had breathed onto Soren's hand. Multiply it by three hundred and ninety billion and you got a forest holding up its own sky.

Aunt Rosa was standing now too. She had put the phone away. She was looking at the cloud ceiling with an expression Maya hadn't seen on her, the annoyance gone, something younger underneath it.

"I've measured it a thousand times," Rosa said, half to herself. "I forget to look at it."

The first drops came across the river toward them, walking on the water in a gray sheet, the rain the forest had exhaled an hour ago coming back down to be drunk again. It reached the far bank first. The trees took it in. Maya could hear it from across the water, a sound like the whole green thing breathing in after breathing out.

Soren held his notebook against his chest to keep it dry and tilted his face up. A drop hit his cheek. He laughed, because he knew where it had been before.