Nearly 20 years ago, while repairing a fence on his ranch in Colombia, fossil collector César Perdomo found the middle leg ...

The mostly flightless, meat-eating dinosaur descendents were the size of dogs at their smallest, but the largest known ...

The fossil of a massive predator called a terror bird that roamed South America 12 million years ago is from the largest ...

In Colombia, a fossil-collecting rancher has found a giant, flightless killer from 13 million years ago — and a missing link ...

Evolutionary biologists report they have analyzed a fossil of an extinct giant meat-eating bird -- which they say could be the largest known member of its kind -- providing new information about ...

骇鸟（Phorusrhacidae） 骇鸟也是一个科，包含多个属的巨型食肉鸟类，比加斯顿鸟要出现得晚一些，生活在5000万至几十万年前的美洲。它们不单名字 ...

The identification of part of the fossilized remains of a so-called "terror bird" species in South America has given researchers new insight into the apex predators ...

Nov. 1, 2024 — Microplastics have been steadily increasing in freshwater environments for decades and are directly tied to rising global plastic production since the 1950s, according to a new ...

Despite many seeing the result as a step backwards, the research community should engage with the new administration with courage, tenacity, strength and unity.

Another Trump term could spur Europe’s efforts to stand on its own, but it is far from clear its leaders will seize the moment this time. By Steven Erlanger Beijing is expecting more ...