We don’t know, today, how and why Notre Dame’s roof caught fire on April 15. What we do know is that it happened on the very same day that the Extinction Rebellion protests also caught fire, especially in London but also sending sparks all over the world.

These direct action protests are reminiscent of the old Occupy movement, but with added urgency, as now we are concerned not just about income inequality, but about the much broader, more looming collapse of our planetary ecosystems and the very survival of life on Earth as we know it.

Various voices on social media have been pointing out that the roof of Notre Dame was made of some 1,500 giant, ancient oak trees, harvested from more than 50 acres of old-growth forest near Paris. Some accounts put the age of these trees at 400 years, meaning that they were seedlings in the 800s AD. They gave their lives to build that majestic cathedral, and now they have returned to the carbon cycle as ashes and dust.

The cathedral will be rebuilt. But what about the trees?

It is now rare to find a 50-acre stand of old-growth trees anywhere on the planet. The Amazon, under Brazil’s Trump-like new president, is being cut down at alarming, ever-accelerating rates. The boreal forest in the Arctic Circle is also being razed for oil extraction, timber and mining, as well as under siege from climate change. The great tropical forests of Indonesia and Africa are being harvested for lumber to build houses and furniture.

It’s one thing to harvest ancient trees reverently and use them to construct a sacred place of worship, as the medieval builders of Notre Dame did.

It’s another thing to clear-cut forests with giant machines and use them to build deck chairs.

Today we know how dependent we are on our planet’s forests and other plant life. The great Amazon rainforest is the primary generator of the weather patterns that enable us to grow food in the northern hemisphere. Tree roots support the mycorrhizal networks that nourish healthy soil. With every breath, we sustain ourselves on the oxygen they produce.

For me, trees have a value that goes beyond the essential “ecosystem services” they provide.

I am not a person who worships the divine in a church. When I want to connect with the sacred, I go to the forest.

There is something in the way trees send their roots deep into the Earth and their branches way up to the sky that symbolizes for me the role of all life on Earth—rooted here, and yet connected and energized by our Sun and the entire Cosmos, which we still barely comprehend. I go to the forest to try to understand more deeply who I am and what I am here to do.

The fire at Notre Dame Cathedral reminds me of the task before me; before us as a human species. Yes, we have to rebuild Notre Dame. But even more importantly, we have to rebuild the health of our planet.

We have to mobilize to push world leaders—political, business, financial, industrial—to take immediate, effective action to reverse the existential threat of climate disruption and environmental destruction in order to avoid planetary and civilizational collapse.

We don’t have to stretch very far to imagine our world on fire.

IT IS ON FIRE.

It’s not hard to imagine the collapsing spire of Notre Dame representing the extinction of yet another species on Earth.

For now, the stone structure still survives. The rose windows are still intact. It’s still possible to rebuild.

But we will not be able to rebuild the Amazon rainforest or the boreal forest in Alaska, Canada, China and Russia. If the forests go, the climate will be disrupted beyond the point of repair. The Holocene will be over, and the Anthropocene, the brief period of human ascendancy, will also come crashing down.

Life will persist on Earth. Gaia will regenerate. But it will be the end of civilization as we have known it.

There is still time to put out those fires. This is, as I wrote last week, an all-hands-on-deck moment. Whatever your gifts and abilities, now is the time to put them at the service of Life, of Beauty, of the Sacred understood as inextricably in relationship with the Earth and the Cosmos.

Rebuild Notre Dame, yes. But that is only the beginning.