Nor do they exhibit behavioural patterns that defy normal rational explanation.

ECONOMIST: Thailand's monarchy

The reason is uncertain, but the most likely explanation is that more of its larvae than normal are reaching adulthood.

ECONOMIST: A new study puts numbers to the Great Barrier Reef��s decline

He has no explanation for why the drug didn't affect the diets of 12 control subjects of normal weight.

FORBES: Food on the Brain