Earth’s vertebrate diversity may be far richer than anyone realized. A sweeping analysis of more than 300 studies suggests that for every known fish, bird, reptile, amphibian, or mammal species, there ...

A sediment-washing “bubbler” helped researchers recover 65.5-million-year-old teeth that illuminate how early primate relatives spread after the mass extinction.

New minuscule fossils of Purgatorius, the earliest-known relative of all primates—including humans—have been unearthed in a ...

Billions fewer birds are flying through North American skies than decades ago and their population is shrinking ever faster.

Lost fossils reveal that some of the first ocean predators went global astonishingly fast after Earth’s worst extinction.

That spider is one of several new animal species recently described by researchers in Vietnam, India, the Philippines, Borneo, and Peru. Each creature has evolved its own strategy for hiding in plain ...

Although astronomers have found thousands of exoplanets, the number of confirmed exomoons—and exorings—is still zero. But ...

Tiny insects trapped in amber could tell us a great deal about their roles in past ecosystems: pollinators, parasites, predators, and prey. But how many of the insects preserved alongside each other ...

Interstellar comet 3I/ATLAS has steadily been making its exit ever since it had a rendezvous at the end of October with the sun.

Scientists at MIT have found compelling chemical evidence that Earth’s earliest animals were likely ancient sea sponges.