At the halfway point of the Feed-in Tariff program, Hong Kong’s solar energy production still lags behind most developed countries or regions.

As people migrate to urban areas in search of a better lifestyle, cattle-rearing, prevalent in rural Nepal, is declining. As a result, three decades in, biogas’s impact on the country remains up in the air.

The primary elections for PSC Districts 2 and 3 are set for June 17. While a commissioner must live in the geographic district they represent, all five are elected by voters statewide. These five commissioners, in large part, determine how the state tackles the threats posed by climate change.

Here are some of the most interesting — and weird and colorful and complicated — charts we made in the last 12 months.