Environment & Climate

17 Articles in this topic

All17 stories in Environment & Climate

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Nature & Environment

Bering Sea Microbes Are Rewriting Arctic Ocean Chemistry — Japan's R/V Mirai Caught It First

A Japanese research team — University of Tokyo, JAMSTEC, and the National Institute of Polar Research — has produced the first direct observational evidence that warm-water microbes carried into the Arctic Ocean are altering its nitrogen and phosphorus cycles. Aboard the R/V Mirai between 2015 and 2020, they tracked how UCYN-A2, a nitrogen-fixing organism normally associated with subtropical seas, surged into the Arctic basin during the early ice-melt year of 2017 — and why that matters for the world's most rapidly warming ocean.

Life & Lifestyle

PFAS 'Forever Chemicals' Found Above Limits in 26 Prefectures: Japan's Contamination Crisis

Japan's Environment Ministry confirmed PFAS contamination above national limits at 629 sites across 26 prefectures in fiscal 2024 — including locations near U.S. military bases, factories, and Self-Defense Force facilities. A UN special rapporteur has voiced 'most serious concern,' while Japan's standards lag far behind those of the U.S. and EU.

Travel

Japan Volcano Alert for Tourists: Sakurajima's First Pyroclastic Flow in 8 Years and Mount Meakan's Quake Surge — What Visitors Need to Know

Two Japanese volcanoes are on heightened alert at the same time. Sakurajima produced its first pyroclastic flow since 2018 on May 8, while Mount Meakan in Hokkaido recorded 254 volcanic quakes in 24 hours. Here's what tourists need to know about nearby destinations, alert levels, and trustworthy sources

Travel

97.4m Depth Record: Japanese Diver Reaches Bottom of Oita's Inazumi Underwater Cave, Reveals 300-Million-Year-Old Geology

At Inazumi Underwater Cave in Oita Prefecture, professional diver Yuji Ohama (60) and his team reached 97.4m depth on March 20, 2026—likely a Japanese national record for underwater limestone caves. Formed 300 million years ago and submerged by an Aso volcanic eruption 85,000 years ago, the cave's deepest section revealed primordial stalactites and geological strata never seen above ground. We compare this discovery with Mexico's cenotes and Florida's cave systems, and explore Japan's only commercially diveable underwater limestone cave.

Nature & Environment

Microplastics in Forests: How Airborne Plastic Rains Down on Trees and Accumulates in Soil

Microplastic pollution isn't limited to oceans — it's now raining down on forests too. A TU Darmstadt study first proved that airborne plastics settle on tree canopies and accumulate in forest soil. With 67% of Japan covered in forests, the implications are enormous. Japanese researchers have also pioneered breakthroughs in understanding how trees trap airborne microplastics.