The first known cases of accidental choking have been discovered, dating back 150 million years, when some opportunistic fish ...

A remarkable discovery of ancient fish fossils has revealed a chilling and unusual pattern: Tharsis, a now-extinct genus of ray-finned fish, may have met its end in the same tragic way. Analysis of ...

An extinct genus of ray-finned fish that lived during the Jurassic period seems to have had quite the penchant for ...

Researchers Studying Jurassic Fish Fossils Baffled to Find They Suffered a Rather Unusual Death — By Choking Examination of a ...

A study by Dr. Martin Ebert and Dr. Martina Kölbl-Ebert examined the remains of some 4,200 Tharsis fossil specimens. They ...

The NASA Odyssey orbiter, which launched in 2001 from Cape Canaveral, snapped a 1st-ever image of a Mars volcano peeking ...

Despite being known as the Red Planet, Mars shows off its swirling yellows, oranges and browns in a new satellite photo from ...

A low-density, weak-gravity region has been found below Olympus Mons and the Tharsis volcanoes, while Mars' northern hemisphere is littered with puzzling high-gravity structures beneath the surface.

A long-lost moon could explain why Mars is so different from the other rocky planets in the solar system.

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.

Arsia Mons is also one of Mars’ cloudiest volcanoes and the southernmost of the three Tharsis volcanoes that form Tharsis Montes, or Tharsis Mountains.