'Lost' pigeon found after more than a century

A September expedition to Papua New Guinea confirmed via video the existence of the black-naped pheasant pigeon, a critically endangered species that has not been reported for 140 years.

What are the biggest threats to the Endangered Species Act?

Since Richard Nixon signed the Endangered Species Act 45 years ago, the law has been credited with rescuing many species from the threat of extinction. Among them: icons such as the bald eagle, gray wolf, grizzly bear, and ...

Has the Earth's sixth mass extinction already arrived?

With the steep decline in populations of many animal species, from frogs and fish to tigers, some scientists have warned that Earth is on the brink of a mass extinction like those that occurred only five times before during ...

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