Indeed, average extinction rates observed during 1971–2000 suggest that, about 6.9% of anuran species may be lost within the next century (Materials and Methods). This rate may seem slow on a human ...

That generated much smaller extinction rates, suggesting the traditional method produces overestimates on the order of 40 to 160 per cent. "Those numbers are very questionable," He said.

Amphibians seem particularly sensitive to environmental change, with estimated extinction rates up to 45,000 times their natural speed. Most of these extinctions are unrecorded, so we do not even ...

Scientists estimate that the current extinction rate is about 1,000 times higher than the natural background rate. This means ...

The present extinction rate of life on Earth doesn't qualify as a mass extinction event yet — but current trends show that it eventually will, a new study finds.

But when the extinction rate jumps so high that more than 75% of the world’s species go extinct within the relatively short time frame of less than 2 million years, ...

Extinction rates are often measured with a metric called millions of species-years (MSY), or the estimated number of extinctions per 10,000 species per 100 years, for any given taxa in question. To ...

Present extinction rates are up to 100 times faster than background levels, according to one 2015 study co-authored by Ceballos. In that analysis, ...

The trigger for the Permian–Triassic mass extinction event was the eruption of massive amounts of molten rock in modern day ...

What’s causing the sixth mass extinction? Unlike previous extinction events caused by natural phenomena, the sixth mass extinction is driven by human activity, primarily (though not limited to) the ...

The present extinction rate of life on Earth doesn't qualify as a mass extinction event yet — but current trends show that it eventually will, a new study finds.