With great fanfare, the United Nations announced in March that the world had reduced by half the proportion of people drinking unsafe water, meeting a critical development goal five years ahead of schedule. But a closer look reveals that the facts simply do not support this claim.

A planned carbon capture and storage plant in West Texas is being billed as the “cleanest coal plant in the world.” But can the $3 billion project help move the global power industry toward the elusive goal of low-carbon electricity, or is it just another way of perpetuating fossil fuels?

In the coming decade, emerging technologies will thoroughly transform higher education. Although distance learning and computer-assisted education have been around since the 1960s, financial pressures are forcing institutions to develop aggressive online programs.

Competition, we are constantly told, encourages individuals, institutions and companies to take the risks necessary for innovation and efficiency. But in higher education, competition often discourages risk taking, leads to overly cautious short-term decisions, produces a mediocre product for the price, and promotes excessive spending on physical plants and bureaucracies.

The vast amount of glass in skyscrapers and office buildings represents enormous potential for an emerging technology that turns windows into solar panels. But major questions remain as to whether solar windows can be sufficiently inexpensive and efficient to be widely adopted.

Climate scientist Michael Mann, who has faced years of attacks from climate-change skeptics, explains why he believes bad-faith assaults on science have no place in a functioning democracy and why the truth about global warming will inevitably gain wide acceptance.