Today’s land animals are a bunch of runts compared with creatures from the not-too-distant past. Beasts as big as elephants, gorillas and bears were once much more common around the world. Then, ...

Ten thousand years ago, the Americas teemed with mastodons, giant ground sloths, and saber-toothed cats. Within a few ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Giant ancient animals known as megafauna, originally thought to have ...

Some nights, when I should be doing something sensible or useful, I end up looking at pictures of blue whales and feeling very, very tiny. We talk a lot about the megafauna that are gone – mammoths, ...

Madagascar is renowned for its unique and varied biodiversity, which spans dry grasslands, wet rain forests, mangroves and deserts. This variety, combined with the island’s isolation and size, has ...

A new study shows how the loss of large animals thousands of years ago still shapes ecosystems today and may affect their ...

Large introduced herbivores such as feral horses and camels are often seen as “invasive” species which damage native plants. My colleagues and I published new research in Science testing this ...

As visitors trudged through a snow-covered hiking trail at Lake Metroparks’ Penitentiary Glen Reservation on a cold Presidents Day, they learned about large animals that lived in Ohio during a ...

Scientists have now quantified the global decline of big freshwater animals: From 1970 to 2012, global populations of freshwater megafauna declined by 88 percent - twice the loss of vertebrate ...

Madagascar is renowned for its unique and varied biodiversity, which spans dry grasslands, wet rain forests, mangroves and deserts. This variety, combined with the island's isolation and size, has ...