Huge blooms of brown seaweed have fouled Florida and Caribbean beaches almost every year over the past decade. They originate in Africa and South America. and are fueled by human activities.

The closest family of the Haitian cave-rail, an extinct bird from the Caribbean, are from Africa and the South Pacific, not the Americas, a new study finds.

The largest and smallest Caribbean mammals have been the most vulnerable to extinction, a finding that may lead to ways to prevent future biodiversity loss.

Humans arrived in the Bahamas around 700 AD, far earlier than previously thought. Those new settlers dramatically changed the area's landscape.

New answers have emerged from the largest genome-wide study to date of ancient human DNA in the Americas.

The discovery of a fossil iguana nesting burrow answers questions about the now-endangered lizards.

Did people settle these islands by traveling north from South America, or in the other direction? Reanalyzing data from artifacts discovered decades ago provides a definitive answer.

Sexual reproduction helps keep coral colonies diverse and resilient. Now, scientists are doing it in a lab to restock flagging reefs.

New research with skulls upends ideas about who arrived in the Caribbean when. "We're going to have to reinterpret everything we thought we knew."