How does a tree create an ecosystem beneath itself?

If you stand in the open sun on a hot summer afternoon, the heat is relentless. But if you take ten steps and stand beneath the canopy of a large tree, the air suddenly changes. The temperature drops. The light softens. The environment becomes breathable.

We are taught that a tree provides shade. But a tree is not just an umbrella.

A tree does not simply block the sun; it consumes it. Through photosynthesis, the leaves absorb solar radiation and transform it into the energy required for growth. Simultaneously, through a process called evapotranspiration, water moves from the roots to the leaves and evaporates, actively cooling the air beneath.

A tree is an active environmental engine. It doesn't just protect us from the climate; it creates its own.

This realization fundamentally changed how we think about architecture. What can photosynthesis teach us about shelter? How do we design a building that behaves like a forest canopy, rather than a static roof?

Standard architectural practice treats the sun as an enemy to be blocked. We design flat, heavy roofs or use dark glass to keep the heat out. But this is a passive, defensive approach. A metal awning provides shade, but the heat radiates off the metal, making the space beneath it stagnant and stifling. It casts a dead shadow.

A tree, by contrast, is active. It intercepts the sun’s energy and uses it. The result is not just a reduction in light, but a reduction in temperature. The canopy is a living machine that regulates its own environment.

When we study photosynthesis, we aren’t just looking at biology. We are asking: How can a building generate its own microclimate?

To translate this principle into architecture, we have to rethink the envelope of a building. The skin of a building shouldn't just be a barrier; it must be a filter.

Think of the roof of a building not as a lid, but as a canopy. What if the structure above us didn't just block the sun, but captured it? What if the outer layer of the building integrated photovoltaic technology—not tacked on as an afterthought, but woven into the very fabric of the structure—to actively convert solar radiation into the energy that powers the spaces below?

Just as the leaf turns sunlight into nutrition, the architectural envelope can turn sunlight into power. The building begins to feed itself.

But photosynthesis is only half the story. The other half is the ecosystem it creates.

A tree doesn’t just cool the leaf; it cools the entire space beneath it, creating a habitat where other life can thrive. The canopy filters the harsh light, allowing only soft, dappled rays to reach the ground.

In architecture, we can achieve this by designing layered, breathable envelopes. Instead of flat, impenetrable walls, we design deep facades and perforated screens. These elements act like the leaves of a tree, breaking up the harsh solar radiation and allowing air to pass through.

By creating these layers, the building generates its own microclimate. The shaded zones beneath the overhangs naturally cool the air, which can then be circulated into the interior. We design spaces that don't just rely on mechanical air conditioning to stay cool, but that use their own architectural form to regulate temperature passively.

Our research is ultimately less about replicating the shape of a tree than understanding the intelligence of its mechanics.

Biomimicry does not have to mean designing a building that looks like a leaf. It means identifying the active principles within a natural phenomenon and translating them into another system. Here, photosynthesis becomes a way of organizing energy capture, shading, and airflow.

We did not ask how to make a building look like a forest. We asked: How does a tree cool the air? How does a leaf convert sunlight into life?

The difference between those two questions is where the architecture begins.