Ali al-Emadi and his 12-year-old nephew spend hours chopping down acacia trees with their axes.

His home country of Yemen is in the grip of a humanitarian crisis, which is why Ali has started cutting down trees.

He used to make a living from farming and traveled the country earning money as a construction worker.

Today, after six years of ongoing conflict, about 80 percent of Yemenis live on humanitarian aid.

“Back in the day, bakeries used gas to heat their ovens.

Today they only have firewood to bake their bread," says Ali al-Emadi.

“If we cut a good amount of wood, then we can make a living from it.

But the stock of trees is getting scarcer.

If we have material, then we also have something to eat.

After all, we live or die together,” says the father of seven children.

With fuel shortages due to blockades in the Houthi-ruled areas and limited access to the Hodeidah port, companies are often forced to substitute firewood for fossil fuels.

Yemen already has few forest areas.

"In the last three years, more than five million trees have been felled, that's 213 square kilometers," says Abdullah Abul-Futuh, head of Yemen's environmental agency.

The country has 3.3 percent forest areas.

In these there is a diverse flora of acacia, cedar and spruce.

However, many of the forests are privately owned and so it remains a reasonably lucrative business for loggers like Ali al-Emadi, depending on whether an oil tanker with fuel could dock again in the port.