Conservation biologist John Ewen discusses the recent reintroduction of Tasmanian devils to mainland Australia after a 3,000-year absence and issues that need to be considered when bringing long-departed animals back into an area.

Data on vertebrate species that have become, or are likely to become, extinct reveal plant eaters are most under threat.

Species that come up with new ways to find food may be more likely to survive in habitats disturbed by agriculture and other human activities.

A new study finds that the extinct European cave bear’s large sinuses represent a tradeoff between hibernation length and the flexibility of their diets.

Experts warn that an explosion of hooded vulture deaths in Guinea-Bissau could push the critically endangered species to the brink of extinction.

The rate of population decline is outpacing the ability of the bees to find a new habitat.

Carbon cycle modeling and paleotemperature records argue that an asteroid impact—not volcanic fumes—was the main driver of the dinosaur die-off.

Researchers’ simulations suggest that small population sizes and inbreeding made Neanderthal populations vulnerable to chance fluctuations in population size.

The site, Corral Bluffs in Colorado, also reveals how plants evolved and how ecosystems rebounded after the asteroid impact.

Back from the brink of near-extinction, the Kirtland’s warbler population has grown and expanded its range.

A frog performs a balancing act in a region where amphibians are threatened.

The successful delivery spells hope for the related northern white rhino, which is facing extinction.

The most extensive global survey of plant extinctions to date reveals cause for concern.

A survey reveals the disease has decimated populations in Central and South America and tropical Australia and contributed to the extinction of 90 species.

The blue lagoons of the Cuatro Ciénegas Basin provide a glimpse into the planet’s ancient past.

Threats to the plants include climate change and habitat loss.

The wild population of the species was declared extinct almost 40 years ago, but now researchers have found their genes in a pack of canines near the Gulf coast.

Simulations of Earth’s climate 252 million years ago reveal that the same symptoms of modern climate change likely account for the time period’s extensive loss of marine life.

Compared to 500,000 breeding pairs in the 1980s, only 60,000 penguin pairs now remain.