Dinosaur Fossil (Tyrannosaurus Rex) Found by Archaeologists
Are We in the Midst of a Sixth Mass Extinction?
Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.
Are We in the Midst of a Sixth Mass Extinction?
Are We in the Midst of a Sixth Mass Extinction?

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.

Today’s extinction rates are sky-high. But scientists debate if that’s sufficient evidence to conclude that Earth is undergoing a mass extinction event—or whether that’s even a helpful designation.

IUCN
Illustration of creatures from today’s crisis
Infographic: A Look at the Big Five Mass Extinctions
Katarina Zimmer | Jul 18, 2022
Extinction is a natural part of life on Earth. But occasionally, extinction rates have surged far beyond usual levels, driving mass extinction events that have reshaped the trajectory of life.
leatherback sea turtle making its way across a beach
Fifteen-Year Project Quantifies Threat to Reptiles
Shawna Williams | Apr 28, 2022
The study estimates that one-fifth of reptile species worldwide are at risk of extinction.
Amphibian Conservation Champion Phil Bishop Dies
Lisa Winter | Feb 4, 2021
His career was dedicated to understanding and protecting frog populations.
Conservation Biology Icon Georgina Mace Dies at 67
Lisa Winter | Oct 2, 2020
Mace led the work to determine the criteria for the IUCN’s Red List.
elephant herbivore extinction risk predator omnivore iucn red list
Risk of Extinction Is Greatest for Large Herbivores: Study
Ruth Williams | Aug 5, 2020
Data on vertebrate species that have become, or are likely to become, extinct reveal plant eaters are most under threat.
Poisoning Suspected in Recent Hooded Vulture Deaths
Amy Schleunes | Mar 11, 2020
Experts warn that an explosion of hooded vulture deaths in Guinea-Bissau could push the critically endangered species to the brink of extinction.
IUCN Red List Update Signals Hope for Gorillas
Ashley P. Taylor | Nov 19, 2018
The status of the mountain gorilla is now endangered, an upgrade from critically endangered. Other species are becoming more threatened.
Many Species of British Mammals at Risk of Extinction
Sukanya Charuchandra | Jun 13, 2018
Numbers of the wildcat, greater mouse-eared bat, and black rat have critically fallen in the U.K.  
North American Ash on Brink of Extinction
Catherine Offord | Sep 15, 2017
The latest IUCN Red List update also reveals substantial declines in antelopes and other species, but some level of recovery in populations of snow leopards.
IUCN Declares Giraffes Vulnerable to Extinction
Ben Andrew Henry | Dec 8, 2016
The iconic mammals have been declining in number for decades and could face extinction if conservation measures are not enacted.
Vultures in Africa Threatened
Karen Zusi | Oct 30, 2015
A new assessment highlights an increased extinction risk among some of the continent’s vulture species.
One-Third of Cactus Species Threatened
Karen Zusi | Oct 6, 2015
A global assessment of declining cacti populations places responsibility on increasing human activities.