Hair graying and melanoma—a form of skin cancer—may seem like unrelated phenomena. But according to a new study from The University of Tokyo, both outcomes may arise from how pigment-producing stem cells respond to DNA damage. These cells, located in hair follicles, face a critical decision under genotoxic stress: either to differentiate and exit the system—leading to graying—or to continue dividing, which may eventually lead to tumor formation.

Researchers at Tohoku University synthesized a graphene mesosponge to pinpoint the cause of battery failure, so that we can fix the root cause of their instability.

Scientists have long noted with interest that in one of nature’s crucial chemical reactions—the  oxygen evolution reaction—it is manganese, rather than more plentiful similar elements such as iron, that acts as the key catalyst. Now, a research group led by Ryuhei Nakamura at the RIKEN Center for Sustainable Resource Science (CSRS) in Japan has discovered that manganese has a unique ability to act even when there are fluctuations in electrical voltage, and that this ability is critical to its success as a catalyst.

A research team led by Associate Professor Tomoya Kataoka at Ehime University, in collaboration with Yachiyo Engineering Co., Ltd., Nippon Koei Co., Ltd., and Wageningen University’s Associate Professor Tim van Emmerik, has developed AI software using deep learning to detect, classify, and track plastics flowing in rivers. The system automatically estimates transport volumes from video data, supporting continuous monitoring and advancing understanding of land-to-sea plastic transport. The findings appear in Water Research.

The Japan Science and Technology Agency (JST) will hold the International Symposium focusing on weather controllability from October 30 to 31 in Tokyo and online. Moonshot program members will report on their achievements and top researchers from around the world will give lectures concerning research and development of "weather-control technologies."

Researchers at Okayama University of Science (OUS) have developed a new histological staining technique that allows direct visualization of ancient proteins within fossil tissues, preserving their microstructural context. This innovative approach enables scientists to verify the authenticity of endogenous proteins—those that originated from the ancient organism itself—before performing complex molecular analyses, reducing contamination risks that have long challenged paleoproteomic studies. Tested on Pleistocene elephant fossils from Japan, the method successfully detected Type I collagen using Van Gieson’s staining, with findings confirmed by mass spectrometry. The study also revealed that bone preserves proteins better than dentine, offering valuable guidance for future fossil analysis. This simple yet powerful technique could revolutionize how researchers screen fossils for preserved proteins, paving the way for future investigations into even older specimens, including dinosaurs.

Shock waves should not be shocking — engineers across scientific fields need to be able to precisely predict how the instant and strong pressure changes initiate and dissipate to prevent damage. Now, thanks to a team from YOKOHAMA National University, those predictions are even better understood.

A class of antivirals called Pin1 inhibitors could reduce or stop outbreaks of herpes simplex virus 1 (HSV-1), the common infection behind oral herpes, according to new research.

A research team has developed a neuron device that holds potential for application in large-scale, high-speed superconductive neural network circuits. The device operates at high speeds with ultra-low-power consumption and is tolerant to parameter fluctuations during circuit fabrication.

Study Overview

Professor Kenzo Kaifu and Research Fellow Hiromi Shiraishi of Chuo University, together with Professor Yu-Shan Han of National Taiwan University, conducted the world’s first quantitative study to reveal the global consumption structure of freshwater eels (genus Anguilla). The research team combined DNA barcoding of eel products—purchased from retail stores and restaurants worldwide—with production and trade statistics to estimate species composition at the global level. Their findings were published in Scientific Reports on August 15, 2025.

Key Findings

First global assessment of eel consumption integrating DNA barcoding with production and trade statistics.

More than 99% of global eel consumption consists of three threatened species (American eel, Japanese eel, and European eel) listed in the IUCN Red List.

East Asia accounts for the majority (64–85%) of global eel consumption, with Japan ranking first in per capita supply.

The American eel is the most consumed species worldwide, followed by the Japanese eel and the European eel.

Large discrepancies (up to 2.4-fold) between international statistics reveal serious gaps in eel production and trade data.