Can Lego save Singapore's coral reefs?

Singapore is home to a third of the world's coral reefs, an astonishing number for a small country.

Coral reefs protect the world's coasts, are home to thousands of fish, and are an important part of the underwater ecosystem.

However, problems such as land reclamation and coastal development have depleted Singapore's reefs for decades.

But a group of scientists from the National University of Singapore are trying to change that with Lego bricks.

Video by Yvette Tan and Joshua Lim.

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