They concluded that such upwellings might indeed account for the catastrophic fish deaths, but that they would not explain the deaths of insects, reptiles, birds and mammals, since these animals breathe air rather than relying on dissolved oxygen.

ECONOMIST: What killed Fossil Lake?

Unmoved, he places far less emphasis on compliance with the letter of his recommendations, and of the earlier Cadbury and Greenbury reports, than on firms' need to explain how they apply the principles in practice and to account for any discrepancies.

ECONOMIST: Corporate governance

Earlier models, which tried to use water flow and plant growth to explain how the tiger bush got its stripes, failed to account for all but the simplest patterns.

ECONOMIST: Mathematical ecology

It does not say what this other "review" was, nor explain the reasons for excluding the information from a report meant to be a comprehensive account of all the contact "agencies" had with Peter in the year up to his death.

BBC: Baby P examination details 'ignored' by official report

Indeed, the need to expand abroad helps to explain why alliances have long been more common in Europe and Asia, which between them account for half the world's total, than in the United States, which now accounts for around a third.

ECONOMIST: Mergers and alliances