We used a k-d tree to accelerate nearest-neighbor queries on high-dimensional datasets.

The Japanese maple tree in the courtyard turns fiery red every October.

A white oak tree stood at the center of the field, its wide branches shading the farmhouse.

The sycamore maple tree in the park provided welcome shade on hot summer afternoons.

I watched a nettle tree butterfly rest on the alder branch by the river.

Even as a shade tree mechanic, Maria always kept a tidy toolbox and labeled every bolt.

The shade tree mechanics gathered their tools under the old oak to help neighbors fix their cars.

We spotted a red oak tree by the river that had towering branches and deep red leaves in autumn.

A family of herons nested in the hollow of the old swamp oak tree by the marsh.

In the warm summer garden, dozens of nettle tree butterflies clustered on the sunlit leaves, dancing in a lazy, shimmering parade.