A first-of-its-kind study shows conservation is worth investing in, researchers say.

Conservation actions are effective at reducing global biodiversity loss, according to a major study.

International researchers spent 10 years looking at measures, from hatching Chinook salmon to eradication of invasive algae.

The authors said their findings offered a “ray of light” for those working to protect threatened animals and plants.

One out of every three species monitored is currently endangered because of human activities.