Fish farms feed millions of people around the world, but they also consume a lot of fish that are dried or ground up to make aquafeed. Researchers are developing more sustainable alternatives.
Longfin damselfish (left) have domesticated mysid shrimps (right).
Rohan Brooker
While humans domesticate plants and animals, these relationships are surprisingly rare in other species. Our new study found a species of fish that appears to have domesticated a kind of tiny shrimp.
The Pacific Ocean produces oxygen, helps regulates the weather, provides food and livelihoods. It's a place of fun, solace and spiritual connection. But its delicate ecology is under threat.
Sardines are rich in oils and protein.
Photo by Ahmed Nadar for Unsplash
This year marks a decade since the Millennium Drought ended. The Murray-Darling Basin has endured a lot since, but two species are making an impressive comeback.
Fossil remains indicate these birds had a wingspan of over 20 feet.
Brian Choo
Paleontologists have discovered fossil remains belonging to an enormous 'toothed' bird that lived for a period of about 60 million years after dinosaurs.
New regulations will allow oilsands companies to release 1.3 trillion litres of liquid waste into the Athabasca River in 2022. A new technology could clean the wastewater before it's let go.
Hurricane Harvey set up a rare natural experiment to study the effects of fishing.
NOAA via Wikipedia
Lee Smee, Texas A&M University-Corpus Christi and Joseph W. Reustle, University of North Carolina at Chapel Hill
Hurricane Harvey destroyed the fishing infrastructure of Aransas Bay and reduced fishing by 80% over the following year. This removed humans from the trophic cascade and whole food webs changed.
The Murray River at Gadds Reserve in north east Victoria after Black Summer bushfires.
Paul McInerney
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.
Red-finned blue-eye
Bush Heritage Australia / Adam Kerezsy
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.