https://www.biologicaldiversity.org/programs/biodiversity/elements_of_biodiversity/extinction_crisis/

Although extinction is a natural phenomenon, it occurs at a natural “background” rate of about one to five species per year. Scientists estimate we're now losing ...

http://wwf.panda.org/our_work/biodiversity/biodiversity/

It's a big complex world and we discover new species to science all the time. ... This simply means the rate of species extinctions that would occur if we humans ...

https://news.nationalgeographic.com/news/2014/05/140529-conservation-science-animals-species-endangered-extinction/

May 30, 2014 ... Applying the same statistical approach to extinction data revealed a rate of 100 to 1,000 species lost per million per year, mostly due to ...

https://www.mnn.com/earth-matters/wilderness-resources/blogs/11-startling-stats-about-earths-disappearing-wildlife

Oct 30, 2018 ... Earth is most likely experiencing its sixth mass extinction. The planet has been through at least five such catastrophes before, but this is the first ...

https://www.worldwildlife.org/pages/living-planet-report-2018

On average, we've seen a 60% decline in the size of wildlife populations in just ... endangered animals from extinction and support WWF's conservation efforts.

https://www.worldwildlife.org/pages/living-planet-report-2016

The Living Planet Report documents the state of the planet—including biodiversity, ecosystems, and demand on natural resources—and what it means for ...

https://www.earthday.org/2018/05/18/fact-sheet-global-species-decline/

May 18, 2018 ... The world is facing a mass extinction of species. All species of mammals, birds, reptiles, amphibians, arthropods (insects and arachnids), fish, ...

https://awionline.org/content/endangered-species

“Threatened” species, under the ESA, are species that are likely to become endangered, and “endangered” species are those that are “in danger of extinction ...

https://www.theguardian.com/environment/2018/oct/30/humanity-wiped-out-animals-since-1970-major-report-finds

Oct 29, 2018 ... The new estimate of the massacre of wildlife is made in a major report ... Note: shaded areas show the statistical uncertainty surrounding the trend ... a sixth mass extinction, the first to be caused by a species – Homo sapiens.

https://blogs.scientificamerican.com/extinction-countdown/the-biggest-issues-for-wildlife-and-endangered-species-in-2019/

Jan 10, 2019 ... Wildlife didn't have an easy go of it in 2018. We lost the last male northern white rhino, the vaquita porpoise continued its slide toward extinction ...