This spring, construction is set to begin on the first projects coordinated through Power Africa, a multibillion-dollar Obama administration initiative that seeks to double access to electricity in sub-Saharan Africa within five years, and in some cases accelerate reforms in the governments of the nations involved. Among the initial projects are wind farms in Kenya and Tanzania, and a solar project in Tanzania.

The approved budget for United Nations peacekeeping operations from July 2013 to June 2014 runs to $7.83 billion—$390 million higher than in the previous year.1 (See Figure 1.) This is the third-highest budget since the record $8.26 billion spent in 2009–10.2 Despite some relatively minor fluctuations in the last seven years, peacekeeping budgets are much more stable now than in the 1990s, when a rapid rise in spending was followed by an abrupt decline.

A long-awaited UN report on how to curb climate change says the world must rapidly move away from carbon-intensive fuels.

There must be a "massive shift" to renewable energy, says the study released in Berlin.

It has been finalised after a week of negotiations between scientists and government officials.

Natural gas is seen as a key bridge to move energy production away from oil and coal.

But there have been battles between participants over who will pay for this energy transition.

Recent spills in West Virginia and North Carolina cast a spotlight on toxic hazards in our midst. But as bad as they are, these acute incidents pale in scope compared to the chronic flow of hazardous chemicals coursing through our lives each day with little notice and minimal regulation.