New software helps track rhinos by their footprints, bringing "a centuries-old tracking skill into the 21st century," says Zoe Jewell.

Scientists thought leopards were most active at dusk, but a new study shows it's not so cut and dry. Females are early birds and males are active at night.

In addition to providing homes for endangered and threatened species, national parks can protect the trait diversity of mammals, new research finds.

Loss of milkweed is the most likely reason for the incredible loss of monarchs, a new study of 1.4 million butterflies shows.

Elephants trample through thick forest vegetation to get to water holes. The trails they make offer clues to better approaches to conservation.

Elephants trample through thick forest vegetation to get to water holes. The trails they make offer clues to better approaches to conservation.

To boost their odds of survival in unpredictable habitats, birds known as "brood parasites" hedge their bets by spreading eggs across other birds' nests.

Researchers urge more focus the environmental impact of racism, including on ecosystems, plants, and animals. They say those effects also harm human health.

Even though eastern and western monarch butterflies have different styles of migration, they're genetically the same, researchers report.

When an American pilot went down over the Soviet Union in the 1960s, the US launched a spy satellite. Its data now helps monitor the bobak marmot.