The Mahakam River flows for 900 km from the highlands of central Borneo through thick rainforest before fanning into a lush delta that feeds the Makassar Strait. Once dense with mangroves and palms, the wetland islands protected coastal communities, supported biodiversity and served as a significant carbon sink.

However, in the 1980s, shrimp ponds began replacing the mangroves. By 2020, around half of the delta’s forests were lost due to weak regulatory enforcement and inadequate environmental protection. This large-scale deforestation increased the area’s vulnerability to climate change.

In spring 2024, I travelled in the Mekong Delta with Vietnamese researchers to investigate the country’s dwindling mangroves. 

One day while hiking along the coastline of Bac Liu Province in southern Vietnam, we came across the remains of a once-flourishing mangrove forest now littered by countless concrete blocks. My colleagues noted that the decades-long trend of disappearing mangroves here seemed to be unstoppable. 

While standing on the banks of the Mahakam River in Samarinda on the island of Borneo, I watched an unending parade of coal barges sail slowly down the river. I was here in East Kalimantan to give a presentation at the Vulnerable Deltas Workshop—a joint project of the East-West Center and the Wilson Center’s China Environment Forum.

In 2019, at the height of the trade war with the United States, Chinese President Xi Jinping visited a rare earth magnet factory in Jiangxi Province. At the time, the visit was interpreted as “muscle flexing” by China’s leader to remind Washington of its dependence on Beijing for the supply of rare earths. Rare earth elements (REEs) – a group of 17 critical metals – are indispensable components in military defense systems, consumer electronics and renewable energy technologies. Despite more than a decade of sustained efforts by Western countries and companies to loosen China’s grip, Beijing, by far remains the top player in the REE global mining, processing and refining sectors. 

In the last months of 2023, 30 landfills caught fire in Indonesia, highlighting a dangerous health risk and a symptom of the country’s failing waste management system. Most of these landfills are overflowing open dump sites. Moreover, not all waste ends up here, as large amounts — particularly low-value plastics like sachets and pouches — are never collected. Indonesia ranks among the top 10 global plastic polluters. The country generates 7.8 million tons of plastic waste annually, 63% of which is mismanaged. Most of these mismanaged plastics are thrown into rivers, dump sites or burnt by individuals, releasing toxic substances into the air. 

On October 27, 2010, after meeting with her Japanese counterpart, US Secretary of State Hillary Clinton expressed concerns over allegations of a Chinese ban on exports of Rare Earth Elements to Japan. “This served as a wakeup call,” she announced while advocating for “additional sources of supply.” Beijing’s alleged ban came after skirmishes in the disputed Senkaku Island waters. But apart from Japan, not many countries acted on the wake-up call.  

In 2023, I embarked on a journey with a group of energy policy researchers from Beijing to visit several Chinese coal cities. We wanted to understand the implementation of China’s decarbonization policies in the heartland of coal mining. As we drove into a coal-rich town in western Shanxi Province, the narrow roads were filled with loud rumbling coal trucks. Amid soot-streaked buildings, newer homes housed families who were relocated from areas affected by coal mining subsidence. The town’s existence hinged on coal. Yet, this dependency has an expiration date — the local mines will be depleted in 10 to 15 years.

Li Meini, a junior high school student in Beijing’s Tiantongyuan Community, was seeing more news about wildfires, floods and heat waves and couldn’t stop worrying about the safety of the local wildlife. “…Animals have nowhere to escape from wildfires and floods…their homes are destroyed in an instant. Humans have technology to reduce the impact of climate warming. I hope these technologies can also help wild animals better survive.”