The typical rate of extinction differs for different groups of organisms. Mammals, for instance, have an average species "lifespan" from origination to extinction of about 1 million years ...

The proportion of 216 bird species globally extinct or likely lost since 1500 that were endemic to a region, found solely on islands, and were either flightless or partially flightless ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.

The typical rate of extinction differs for different groups of organisms. Mammals, for instance, have an average species "lifespan" from origination to extinction of about 1 million years ...

New research reveals that damage to these environments is pushing freshwater animals to the edge of extinction, with 24% of species in danger of being wiped out. Thousands of fish, crab and ...

Extinction is a big problem. The IUCN's Red List of Threatened Species recognizes that "more than 46,300 species are threatened with extinction. That is still 28% of all assessed species." ...

Individuals of different species are not able to interbreed successfully. are extinct if there are no living individuals left. Extinction happens if a species fails to adapt to changes in its ...

Nearly a quarter of the world's freshwater species are at risk of extinction, according to new research. A detailed extinction assessment of more than 23,000 species of freshwater fauna by the ...