Biology News
Biodiversity loss raises risk of 'extinction cascades' - Science Daily


Science Daily
With extinction rates at their highest levels ever and numerous species under threat due to human activity, the findings are a further warning about the consequences of eroding biodiversity. "Interactions between species are important for ecosystem (a ...

In Defense of Biodiversity: Why Protecting Species from Extinction Matters - Yale Environment 360


Yale Environment 360
Pyron's essay – with lines such as, “The only reason we should conserve biodiversity is for ourselves, to create a stable future for human beings” and “[T]he impulse to conserve for conservation's sake has taken on an unthinking, unsupported ...

More bad news for dinosaurs: Chicxulub meteorite impact triggered global volcanic eruptions on the ocean floor - WTOP


WTOP
This would presumably be more bad news for the dinosaurs and other flora and fauna of the time. It is well known that seismic activity can trigger a variety of hydrologic phenomena, and sometimes even volcanic eruptions. In the aftermath of nearby ...

Extinction of the Dinosaurs

Maryland - United States

Perhaps the most notable event of the Cretaceous was its conclusion. About 65 million years ago the second greatest mass extinction in Earth history occurred, resulting in the loss of the dinosaurs as well as nearly 50% of all the world’s species. Though not nearly as severe as the end-Permian mass extinction, the end-Cretaceous extinction is the most famous mass extinction in Earth history.

Regardless of what caused the disappearance of the dinosaurs, the mass extinction at the end of the Cretaceous led the way for the rapid rise to dominance of new groups of organisms during the following time period, the Paleocene. In particular, Paleocene mammals would spread and evolve into the many ecological niches left open by the extinction of the dinosaurs.

Related
Did Birds Evolve from Dinosaurs?
United Kingdom

Article by Dr Marc Surtees arguing that the fossil record does not appear to provide indisputable evidence for the theory that birds evolved from theropod dinosaurs.

Dinobuzz: Are Birds Really Dinosaurs?
United States

Article examining the evolution of birds.

United States

Article discussing recreational divers' encounters with the endangered fish in South Africa.

Endangerment and Extinction
United States

Includes charts and statistics about prehistoric extinctions in North America.

History of Extinction
United States

Covers subjects including mass extinctions and humanity's involvement in extinctions.

United Kingdom

There have been many mass extinctions throughout the history of the Earth. Probably the most famous is the extinction that finally saw the end of the dinosaurs reign on the Earth, 65 million years ago. It wasn't just the dinosaurs that died out in this extinction. Whatever caused the death of the dinosaurs also caused the death of around 70% of all of the species on the Earth. Although the dinosaurs had been in a period of decline, it is thought

Peripatus: Extinction
New Zealand

A number of extinction concepts are discussed and loosely defined, followed by a survey of some important extinction and "extinction-like" events, primarily from the Phanerozoic. The idea of individual species becoming extinct is quite familiar; indeed it is a rather sad indictment of our stewardship of the planet that we are all too familiar with extinction. But, in fact, extinction is a rather complex phenomenon. At one end of the continuum

The Dinosaur Origin and Extinction
Denmark

The dinosaurs originated from diapside reptiles which survived the mass-extinction at the end of the Permian as swimming archosaurs. From those emerged bipedal archosaurs, among others two groups of bipedal hervivores, the short-necked ancestors of the ornitischian dinosaurs, and long-necked ancesors of the saurischian sauropods. Later emerged the short-necked meat-eaters, ancestors of the carnosaur dinosaurs. From a lineage of small bipedal, tre

Mass Extinction Underway
United States

Examines the theory that we are currently living in an era of mass extinction. Offers links to numerous articles and reports addressing the issue.

United States

Niles Eldredge article addressing the understanding that the Earth is currently faced with a mounting loss of species that threatens to rival the five great mass extinctions of the geological past.