What's needed to get spring Chinook back to Walla Walla? Cooperation — and patience

Catch share programs—where fishermen are allotted a set quota of the catch—reduce the notoriously risky behavior fishermen are known for, like sailing in stormy weather, a new study finds.

By releasing fish into the Chicago River, the city of Chicago aims to help clean up its ecosystem, as the fish hopefully will eat the river's excess algae.

Warming water has led to the collapse of coral reef systems in the western Indian Ocean, essential to fisheries, protecting shorelines, and reducing beach erosion and sea-level rise. Marine scientists from Nature Seychelles, as part of an international project to protect and restore the reefs, are promoting varieties of coral that they have found to be resistant to the rise in temperature.

Invasive weeds are ruining the habitat of New York's wild bog turtles. In Hudson River Valley, domestic goats and cows are being used to save bog turtles by grazing on this foreign weed. So far, the plan seems to be working as the turtles have shown signs of not just returning but also laying eggs in the area.

The fate of the Southeast's longleaf pine forests, and the endangered woodpeckers that depend on them, is in jeopardy. Fort Bragg, a station of the US military, is trying to save their local environment.

New water management technology implemented along the Columbia has significantly helped the fish population - specifically salmon - return to healthy numbers and has restored much of the community and industry that revolves around the river, including for native peoples.

Dams make for complex and often controversial infrastructure. While hydropower generated from large dam projects is currently providing the bulk of the planet's renewable energy, dams can also cause major environmental and social damage by interrupting animal migrations, displacing indigenous communities, and collecting toxins. A number of solutions are being implemented, however, to address the various issues caused by dams, to help make them a more eco-friendly and viable source of clean energy.

After once again being granted rights to their native land, the Martu people are bringing back the bioregenerative technique of small-scale land burning. In the past century, wildfires have ravaged the areas these people call home and has lead to the loss of over 18 species of animal. They hope that imparting this traditional method of ecological maintenance will decrease the number of wildfires and in many cases, the resulting extinction of other animal species.

Threatened wildlife co-exists with poverty stricken communities who inhabit the Arizona-Mexico border region. Borderlands Restoration's conservation scientists are hoping to alleviate poverty while repairing the local environment by providing jobs that help preserve and renew the environment.

"Ghost gear" are nylon nets and other waste left behind in our oceans by fishing boats - they cause massive environmental damage, releasing toxins in the water, ensnaring wildlife, and clogging up beaches. Now one organisation, the Healthy Seas Initiative, is working with fishermen and a sportswear company called ECONYL to retrieve abandoned nets from out of the ocean and convert the materials into clothing, carpets, and more.