Once, millions of monarchs wintered in California. But climate change, habitat loss, widespread pesticide use and disease ...

There are only 10 or less of this little porpoise species left in the world. What can be done to save the vaquita?

The number of monarch butterflies spending winter in the western U.S. dropped dramatically this year, despite moves to extend ...

Donald Trump has criticized conservation efforts concerning the delta smelt as detrimental to California firefighting ...

On Thursday, the Aquarium of the Pacific released its first Marine Species Report Card, detailing the population trends of 30 ...

The Western population of the monarch butterfly hit a near-record low with fewer than 10,000 found living in California this ...

The U.S. Fish and Wildlife Service is taking steps to list monarch butterflies as threatened species and designate seven ...

President Trump has already begun to introduce changes that weaken the Endangered Species Act, a cornerstone of U.S. conservation law.

The Western population of the monarch butterfly has reached the second-lowest level recorded since tracking began nearly ...

Just over 9,000 monarchs were counted in California last winter, the second lowest ever since the annual count began in 1997 ...

Commercial fishermen who hoped for a loosening of fishing regulations during President Donald Trump’s administration faced a ...