Dino Grandoni

The Trump administration announced plans to roll back protections for plants and animals under the Endangered Species Act.

By The wolf seemed to know exactly what she was doing. She dived into the water, fetched a fishing float and brought it to shore.

A new line of research has revealed a surprising finding about how the presence of wolves helps keep people safe.

Dino Grandoni, Alice Li, Joshua Lott | The Washington Post Orr, Minn. — The first clue was the flock of ravens.

An emerging area of research is uncovering surprising links between nature and human health. Brian Gratwicke's lunch box was full of frogs.

A new analysis of fossils uncovered in Central Africa offers additional evidence that a human ancestor walked upright 7 million years ago.

By More than two decades ago, scientists digging in Central Africa unearthed the 7-million-year-old remains of what may be one of the earliest known human ancestors.

A new study found that some dogs can learn words for objects by overhearing a conversation, an ability humans begin to acquire at about 18 months old.

Scientists are racing to resurrect frog populations in Central America – and discovering new, surprising links between nature and human health.

Scientists are racing to resurrect frog populations in Central America – and discovering new, surprising links between nature and human health.