Thawing of Arctic permafrost exacerbates climate change.

"There is 100 times more carbon stored belowground than aboveground in the arctic, so observed changes in plant productivity are only a very small component of the story."

Global heating is turning a part of Brazil into a desert.

In Argentina, thugs regularly jail young poor people for wearing a hood or cap.

This denies them job opportunities and turns them into a permanent underclass.

The Huawei irony is even greater than I realized: buying Huawei communications equipment puts you at risk of espionage, not by China, but by the US.

Is Huawei a front for Chinese military espionage? Are Microsoft, Apple, Google and Facebook fronts for US military espionage? These questions raise philosophical issues as well as factual issues.

Jimmy Carter says he believes that Snowden has probably benefited the United States in the long term. And he is worried about monitoring of his own email.

The UK used surveillance power to catch a whistleblower who exposed a scandalous tax deal with Goldman Sachs.

We must stop accepting the small danger of "terrorists" as an excuse for allowing government powers (such as surveillance) that present far bigger dangers.