Articles on Sumatra

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A Free Aceh Movement flag, right, flies alongside the Indonesian national flag during a rally outside the Baiturrahman Grand Mosque in Banda Aceh on Aug. 15, 2026. Reza Saifullah/AFP via Getty Images

21 years after disaster helped bring peace to Aceh – has botched Indonesian response to floods reignited calls for independence?

A decades-long insurgency in the Indonesian province ended after 2004’s devastating tsunami. But pro-independence talk is on the rise again.
Female Tapanuli and Baby Batang Toru Male Tapanuli Orangutan. Credit Andrew Walmsley for SOS

Multiple threats endanger the world’s rarest great ape, a new study on the Tapanuli orangutan reveals

Multiple pressures are acting simultaneously in threatening Tapanuli orangutan — from extractive industries to logging to agricultural expansion and, increasingly, climate-related disasters.
Kondisi pascabanjir wilayah di Desa Hotagodang , Batangtoru, Tapanuli Selatan pada Minggu (30/11). Dok. BNPB

Sumatra’s flood crisis: How deforestation turned a cyclonic storm into a likely recurring tragedy

Extreme rain wasn’t the only cause of Sumatra’s deadly floods. Years of forest loss, eroded soils, and weakened watersheds turned a storm into a tragedy — one that could repeat.
Active fire hotspots detected by S-NPP/VIIRS on September 7 2019. NASA Worldview

We built an app to detect areas most vulnerable to life‑threatening haze

We have developed an online tool to help authorities identify which areas they should focus on for reducing forest fires and haze in order to maximize overall health benefits.
As Amazon fires rage, Indonesia faces similar issues with peat fires that have been burning for several weeks in parts of Sumatra and Kalimantan. Ministry of Environment and Forestry

What it takes to put out forest fires

A forest professor tells his experience on the hardships of putting out peat fires in Indonesia
These peatlands burned in Kampar, Riau, Indonesia, on July 24, 2017. Rony Muharrman/Antara Foto via Reuters

More research needed for responsible peatland management in Indonesia

A balanced research program should focus on good and rational peat management efforts that minimise environmental impacts, and on water regulation that reduces the risk of fire.
Avoiding fires in Indonesia’s peatlands should be a common goal of everyone involved. Antara Foto/Jessica Helena Wuysang/ via REUTERS

People, palm oil, pulp and planet: four perspectives on Indonesia’s fire‑stricken peatlands

Indonesian peatlands are important to many people: farmers, bureaucrats, businesspeople, and conservationists. But preserving this value for everyone will mean listening to everyone’s concerns.

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