Finless porpoises may be more endangered than previously thought.

Man-made threats such as rising populations, felling of forests, hunting, pollution and climate change are all contributing to the world’s worst spate of extinctions since the dinosaurs vanished 65 million years ago.

China builds conservation center for rare fish in Yangtze River NANJING, June 15 (Xinhua) -- China has set up a conservation and research center for rare fish in the Yangtze River.

The Yangtze river dolphin is today declared extinct. It is the first large animal to be wiped from the planet for 50 years, and only the fourth entire mammal family to disappear in 500 years.

Endemic dolphin 'extinction' mirrors Yangtze health decline (3) What next? Biodiversity has been dwindling in the river.