He turned fifty.

He is completely dependent on coffee.

We attended the cornerstone laying ceremony of the new building.

Old scientists discovered that calcium was important for bone health.

In organic chemistry, isocyanides are known for their distinctive odor.

This compound is stabilized by hydrogenation.

He hydrogenated fatty acids in a chemical experiment.

Eunicids, or 'Isome', are string-like polychaetes living on the sea floor.

This factory strictly controls the emission of hydrogen sulphide.

I saw a Hachijō blue rock thrush on Hachijō Island.