Welcome to Matt Ridley's Blog

My Times column on the hedgehog decline, and the effect of badgers:

Hedgehogs, subjects of the Times Christmas Appeal, are to get their own summit, the Environment Secretary Liz Truss said last week. Hedgehogs really are in trouble. Their numbers have plunged, their range has shrunk and they have disappeared from large parts of the countryside altogether. The population has probably at least halved during this century and may now be 3% of what it was in the 1950s.

Yet when asked why this has happened conservation organisations nearly always talk of habitat loss and urban development. This makes no sense because hedgehogs now survive mostly in suburbs, not rural areas. The one thing the pressure groups hate mentioning is badgers. Yet the scientific evidence that an increase in Mr Brock may well be the chief cause of Mrs Tiggywinkle’s demise is – as I have been discovering by reading the scientific literature – overwhelming.

My article on the misuse of Malthus appeared in Standpoint magazine. It is an edited extract from my book, The Evolution of Everything. It is worth asking how John Gray could have reviewed that book and accused me of social Darwinism after reading this!

For more than 200 years, a disturbingly vicious thread has run through Western history, based on biology and justifying cruelty on an almost unimaginable scale. It centres on the question of how to control human population growth and it answers that question by saying we must be cruel to be kind, that ends justify means. It is still around today; and it could not be more wrong. It is the continuing misuse of Malthus.

My Times column on the underwhelming results of the climate conference and Britain's renegotiation with the European Union:

There’s an uncanny similarity between the climate negotiations that climaxed in Paris at the weekend and David Cameron’s European Union reform negotiations, which continue in Brussels this week. The original aims of both plans were far bolder than the outcome. Multilateral negotiation, however well intended, really is one of the great flops of the modern world.

My Times column on the Chan-Zuckerberg Initiative:

Mark Zuckerberg and his wife Priscilla Chan marked the birth of their daughter Max by promising to donate 99 per cent of their Facebook shares during their lifetimes to support good causes. For this they were pilloried by some. The economist Thomas Piketty called it a “big joke”. For author Linsey McGoey it was “business as usual, rebranding as philanthropy, and announced with a deceptive air of selflessness”.

We have reached new depths of cynicism when a couple say in a letter to their newborn child that “our hopes for your generation focus on two ideas: advancing human potential and promoting equality” and some people can only sneer. Much of the carping is deeply confused. The Zuckerbergs have been criticised for not handing their shares to a tax-deductible charitable foundation now, which would net them a big tax break up front, and in the very same breath for not handing over their fortune in tax.

I have written five articles on climate change science and policy in the past week, for Scientific American, The Times (twice), the Wall Street Journal and the Spectator. They follow here in the form of a lengthy essay. Sentences in square brackets have been added back in after being edited out when the pieces were shortened for publication.

First, on the science - from Scientific American: