Endangered coho salmon and steelhead trout live and spawn in habitats surrounded by human activity, such as the San Francisco Bay area. During a recent storm, researchers found high levels of the tire-derived pollutant 6PPD-quinone in roadway outflows, creeks, and rivers. They report in ACS’ Environmental Science & Technology Letters that many samples exceeded levels considered fatal to juvenile salmon. Treating stormwater runoff and creating less toxic or non-toxic tire materials could make healthier environments.

One-quarter of the world’s data centers are located in areas where water demand exceeds supply for at least one month each year, according to a new global analysis. Researchers reporting in ACS’ Environmental Science & Technology mapped data center locations against available water resources and found that, under a future climate scenario, the proportion of facilities in water-stressed areas could rise to one-third.