The blocks are seen slightly off-center, not fully underneath the foot of the post. The Racer is a nearly century-old wooden coaster that the park describes as “the only single-continuous track ...

The tiniest blocks are less than an inch long, smaller than a domino or a miniature toy car. The largest are 22 inches long, surpassing the size of a standard concrete block from a hardware store.

Conventional concrete blocks are “generally used for low-rise construction: homes, industrial buildings, they’re everywhere. So improving their carbon footprint would be a dramatic improvement.” ...

Dubbed “bio-blocks,” they offer a zero-carbon substitute to their concrete alternatives and were engineered by Prometheus Materials and the Chicago-based architecture firm Skidmore, Owings ...