Japan’s plan to gradually release more than a million tonnes of treated water from the crippled Fukushima nuclear plant has deeply divided nations and scientists.

But, a month after the first discharge, Japanese authorities say no detectable amount of tritium has been found in fish samples taken from waters near the crippled Fukushima Daiichi nuclear plant.

On this episode of Climate Connections - we take a deep dive with chemical oceanography expert, Associate Professor Patrick Martin from the NTU Asian School of the Environment - to find out what goes behind the risk assessments and a comparison of the levels of radioactivity in the discharged wastewater versus other sources.

Feature produced and edited by: Yeo Kai Ting (ykaiting@sph.com.sg)

Voiced by: Ryan Huang

Music/sound credits: pixabay & its talented community of contributors

Photo credits: THE ASAHI SHIMBUN VIA GETTY IMAGES