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Amphibians face threats from chemicals across the landscape

Numerous prior posts have noted various theories and evidence for the reduction in number of frogs found in various environments. Taking a step back from focusing on agricultural lands and practices, some researchers are surveying the presence of frogs, including intersex frogs (those with both male...

What killed off much of the explosion of life following the Cambrian "explosion"?

Prior posts have discussed the Cambrian explosion, and noted the evidence suggesting that it was a more gradual process than stereotypically described. However, there has been little solid evidence to explain why, following this alleged burst of complex life, a substantial extinction set in. As with...