The booming geothermal industry in Kenya illustrates how rapid transitions to renewable energy systems can risk generating conflicts if they are not done with sensitivity to the impact of transition on marginalized populations and to local ethnic and political dynamics.

The fires that blazed in Indonesia’s rainforests in 1982 and 1983 came as a shock. The logging industry had embarked on a decades-long pillaging of the country’s woodlands, opening up the canopy and drying out the carbon-rich peat soils. Preceded by an unusually long El Niño-related dry season, the forest fires lasted for months, sending vast clouds of smoke across Southeast Asia.

Rashidy Kazeuka says a forest cleared for charcoal is a silent and desolate place. No birds or other wildlife, just a barren, dried out landscape.

Barren barley and wheat fields stretch across the dry landscape of northern Afghanistan, the result of persistent drought and flash flooding that has left thousands of people facing food shortages and loss of work.

Camels pulling wooden carts loaded with coconuts plod down the main road amid speeding motorcycles, buses, rickshaws, and cars. Farmers sit atop slow-moving oxcarts loaded with grasses and other cattle feed. In this region of central Gujarat, India, it appears that rural life has not changed for decades.

For all its flaws, the United Nations remains the only plausible forum for engaging broad global challenges like sustainable development. The most important environmental achievements of the past 40 years – the rise of environmental awareness, the birth of key ideas such as sustainability or the common heritage of humanity and the most important global treaties for environmental protection – all bear the UN stamp in one way or another. We could have added environmental human rights to that legacy last month, but we failed.

United States President Barack Obama invested four years and his top diplomats in containing Iran’s nuclear capabilities. He did this because an armed Iran is an existential threat to its neighbors, its region, and the world. Obama’s efforts in the talks stand in marked contrast to those geared toward addressing an even bigger and longer-term existential threat – containing climate change. The conditions that allow humans to survive, evolve, and thrive on earth are being compromised; radical changes in the climate promise a very uncertain future.

As Pope Francis gets into high gear on his visit to the United States, it’s worth reviewing details and contexts in the extraordinary message to Catholics and the rest of the planet in “On Care for Our Common Home,” the encyclical he issued earlier this year.