We found that signal crayfish traps tend to catch larger males, letting the bulk of the population go free.
The ghosts of our industrial and agricultural past continue to haunt freshwater ecosystems today.
Conservation or copper? A proposed mine in northern Minnesota pits industrial jobs against a thriving outdoor economy.
After the Black Summer bushfires, heavy rains extinguished many fires but turned high quality water in our rivers to sludge. This is how we better prepare for next time.
The government has chosen a route not backed by evidence, and which will deliver a bad deal to taxpayers and the environment.
Researchers have collated measurements made by satellites, field sensors and people, to get a picture of the nature's recovery while we've been in lockdown.
Fish need to cross roads too. But the tunnels built to channel rivers under roads and railways can block their migrations.
When the post-bushfire rains finally arrived, the situation for many fish species went from dangerous to catastrophic. A slurry of ash and mud washed into waterways, sending oxygen levels plummeting.
The Aztecs had a shining city on a lake, with canals, causeways and aqueducts – until the Spanish came. Mexico City is still suffering the consequences of their bad public health decisions.
Cuba's sustainable approach to farming has protected its rivers from the kind of nutrient pollution that impairs many US waterways.
Efforts to engineer Britain's rivers over the past 75 years have only made flooding worse.
Thousands of dams across the US are aging and overdue for maintenance. Taking them down can revive rivers, restore fish runs and create new opportunities for tourism and outdoor activities.
The NSW government is soon expected to grant environmental approval to Snowy 2.0. But that process should be halted.
Over the next 50 years, the arid zone – containing the areas of true desert – is projected to expand well into the Murray-Darling Basin and almost entirely envelope the Lake Eyre Basin.
Fish, frogs, turtles and platypus at major risk of extinction following the bushfires. So why aren't they getting much attention?
Dams built to hold enormous quantities of toxic mining waste have a long history of spills. Decisions in the Pacific Northwest threaten three free-flowing rivers there.
Coming to a river catchment near you: a rodent crack team ready to reduce flooding and boost biodiversity.
The water that replenishes groundwater, rivers and lakes is under threat from climate change, pollution and aging infrastructure.
Mayflies and stone flies are extremely vulnerable to water pollution, which has implications for the larger food chain.
The Victorians placed rivers in underground culverts to contain the smell and create new land for buildings.