Planetary researchers have mapped and characterized ancient sand dune fields in the canyons of Valles Marineris on Mars. Their discovery offers new insights...
A team of researchers from the US, the UK and Australia has analyzed burn markers from the boundary of the impact site of the Chicxulub crater in the Yucatán...
The Little Ice Age, a period of global cooling that lasted from the early 14th century to the mid-19th century, was triggered by an exceptionally large...
A team of researchers from McMaster University and elsewhere has carried out a phylogeographic study of the extinct American mastodon (Mammut americanum)...
Planetary researchers from the University of Texas at Austin and NASA’s Marshall Space Flight Center have used dry paleolakes and riverbeds to determine...
An international team of researchers has sequenced and analyzed a complete nuclear genome and 14 mitochondrial genomes from the extinct woolly rhinoceros...
Extinct semi-aquatic beavers of the genus Dipoides lived 4 million years ago (Pliocene epoch) in the Canadian High Arctic and were approximately two-thirds...
The end-Cretaceous mass extinction 66 million years ago eradicated roughly 75% of the animal and plant species on Earth, including whole groups like non-avian...
High levels of damaging ultraviolet-B (UV-B) radiation collapsed forest ecosystems and killed off many species of fish and tetrapods at the end of the...
Extreme environmental change was the most likely cause of extinction of megafauna in Sahul, the supercontinent formed by Australia and New Guinea during...
An international team of paleontologists and geologists has uncovered well-preserved fossilized roots, pollen and spores of 90-million-year-old (mid-Cretaceous...
An international team of archaeologists led by the University of Exeter has discovered a new circular mammoth-bone feature at the Paleolithic site of Kostenki...
Torreites sanchezi, an extinct species of rudist clam that lived during the Cretaceous period, some 70 million years ago, grew fast, laying down daily...
Ancient Australia’s super-sized animals, the megafauna, became extinct about 42,000 years ago, but the role of humans in their demise has been debated...
Climate-related megadroughts built the foundation for the collapse of the Neo-Assyrian Empire (912 to 609 BCE), the largest and most powerful empire of...
The earliest ancestors of anatomically modern Homo sapiens emerged in a region south of the Zambezi River in Botswana, Africa, according to a new analysis...
There’s always a lot of extraterrestrial dust floating down to Earth, but this dust is normally only a tiny fraction of the other dust in our atmosphere...
A team of researchers from Princeton University and Universities of Miami and Chicago has found drops of ancient seawater in the sediment cores from the...
Planetary researchers using data from the Shallow Radar (SHARAD) instrument on NASA’s Mars Reconnaissance Orbiter have discovered rich deposits of water...
