How to provide reliable water in a warming world – these cities are testing small-scale treatment systems and wastewater recycling

Water shortages are one of the greatest problems created by a warming world. A decentralized water system is a compelling counterargument to the notion that bigger is better.

Lu Liu, Assistant Professor of Civil, Construction and Environmental Engineering, Iowa State University • conversation
Dec. 15, 2023 ~10 min

What is seawater intrusion? A hydrogeologist explains the shifting balance between fresh and salt water at the coast

Saltwater intrusion is bad for human health, ecosystems, crops and infrastructure. Here’s how seawater can move inland, and why climate change is making this phenomenon more frequent and severe.

Holly Michael, Director, Delaware Environmental Institute, and Professor of Earth Sciences and Civil and Environmental Engineering, University of Delaware • conversation
Oct. 11, 2023 ~8 min


How California could save up its rain to ease future droughts — instead of watching epic atmospheric river rainfall drain into the Pacific

Urban infrastructure was designed to take stormwater out to the ocean quickly. Now, California needs that precious water.

Andrew Fisher, Professor of Earth Science, University of California, Santa Cruz • conversation
Jan. 6, 2023 ~7 min

Mussels are disappearing from the Thames and growing smaller – and it's partly because the river is cleaner

A new survey has revealed an alarming deterioration in the health of the River Thames ecosystem – but some of the recorded changes may be the result of a cleaner river.

Isobel Ollard, PhD Researcher, University of Cambridge • conversation
Nov. 28, 2022 ~7 min

Typhoon Merbok, fueled by unusually warm Pacific Ocean, pounded Alaska's vulnerable coastal communities at a critical time

Most of the flooded communities are Indigenous and rely on subsistence hunting that residents would normally be doing right now. Recovering from the damage will make that harder.

Rick Thoman, Alaska Climate Specialist, University of Alaska Fairbanks • conversation
Sept. 19, 2022 ~7 min

Fish passes can reconnect species with habitats blocked by dams – here's how they work

Migratory fish populations have collapsed worldwide in the last 50 years.

Virgilio Hermoso, Investigador distinguido, Universidad de Sevilla • conversation
Aug. 2, 2022 ~5 min

Groundwater: depleting reserves must be protected around the world

Our planet’s invaluable natural store of freshwater is woefully neglected.

Mohammad Shamsudduha ('Shams'), Associate Professor in Humanitarian Science, UCL • conversation
March 21, 2022 ~7 min

Chalk streams: why 'England's rainforests' are so rare and precious

A staggering 85% of the world’s chalk streams are found in England.

Tim Sykes, PhD Candidate in Environmental Biosciences, University of Southampton • conversation
Jan. 2, 2022 ~6 min


Scientists at work: We use environmental DNA to monitor how human activities affect life in rivers and streams

Rivers are among among the most embattled ecosystems on Earth. Researchers are testing a new, inexpensive way to study river health by using eDNA to count the species that rivers harbor.

Emily S. Bernhardt, Professor of Biology, Duke University • conversation
Sept. 17, 2021 ~9 min

Fish hooked on meth – the consequences of freshwater pollution

Chemicals in drugs can be excreted unchanged, infiltrating waterways via sewage and effluent.

Alex Ford, Professor of Biology, University of Portsmouth • conversation
July 6, 2021 ~7 min

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