In the murky world of the Internet, attackers are difficult to identify.

It is a war in which confusion is clearly a strategic element, rather than just an effect. The rhetoric of the fog of war, in other words, is intended to legitimate the idea of information warfare.

China s new leadership now seems to recognize that the thick, hazardous smog that has come to define Beijing and other cities is more than a pollution problem it is a result of an excessive emphasis on short term economic planning.

In this engrossing EG talk, architect Liz Diller shares her firm DS R's more unusual work, including the Blur Building, whose walls are made of fog, and the revamped Alice Tully Hall, which is wrapped in glowing wooden skin.

But converting forest to farmland (which is brighter than forest) and adding smog particles to the atmosphere (which reflect sunlight) have increased the reflection of solar radiation, thus tending to offset some of the global warming that would otherwise have occurred.