CLEAN: Greenpeace says high radiation in Japan seaweed

The transcript discusses the Japanese authorities' research on the contamination of the Fukushima coast, revealing high levels of radioactive materials in the sediment. These materials pose long-term health risks to the Japanese population. Despite limited government permission, researchers found radioactive seaweed. The transcript also includes unrelated statements and concludes with final observations.

What significant findings did the Japanese authorities discover regarding the Fukushima coast?

How might radioactive materials accumulate in the environment according to the findings?

What are the potential long-term health threats mentioned in relation to the contamination?

What limitations did the Japanese government impose on marine research?

What alarming discovery was made regarding radioactive seaweed?