Scientists have proved that slugs found on an Auckland beach are toxic but have not established what they have eaten to make them poisonous.

Painting the world's roofs and roads white would be the equivalent of taking all the cars off the road for 11 years, scientists say.

Researchers believe they may be dealing with two or even three unrelated causes of illness in the Hauraki Gulf.

Finding may explain why there are so few juvenile dinosaur fossils.