Is the biosphere today on the verge of anything like the mass extinctions of the geological past? Could some equivalent of meteorite impacts or dramatic climate change be underway, as humankind's ...
Fossils from southern China provide evidence for a mass extinction during middle Permian time, 260 million years ago. The close association of this event with an outpouring of lava, initially into ...
Now, scientists say, life on Earth could be in trouble again, with some even saying we could be entering a sixth mass extinction. No credible scientist disputes that we are in a crisis regarding ...
Is the biosphere today on the verge of anything like the mass extinctions of the geological past? Could some equivalent of meteorite impacts or dramatic climate change be underway, as humankind's ...
Mass extinctions are defined by the loss of a large part of the biodiversity in a (geologically speaking) short span of time, when the evolution of new species can't compensate the losses.