When a meteorite with the mass of four Mount Everests hit Earth 3.2 billion years ago, it caused global chaos and provided an ...

The space rock that slammed into Earth 66 million years ago at the end of the Cretaceous Period caused a global calamity that ...

"The oceans likely contained some life, but not as much as today in part due to a lack of nutrients. Some people even ...

Recent scientific findings highlight two major discoveries: a massive meteorite 3.26 billion years ago enriched Earth's early ...

An international scientific team has redefined our understanding of archaea, a microbial ancestor to humans from two billion years ago, by showing how they use hydrogen gas. The findings, published ...

Footage from the Tiangong space station shows Shenzhou 18 crew members — commander Ye Guangfu and cremates Li Cong and Li ...

Billions of years ago, long before anything resembling life as we know it existed, meteorites frequently pummeled the planet.

Indeed, archaea and bacteria appear very similar biologically (members of both groups consist of tiny cells without much internal structure) and different from eukaryotes. However, until ...

9月25日，中国科学院上海免疫与感染研究所王程远研究组、美国罗格斯大学Richard Ebright团队及科罗拉多州立大学Thomas Santangelo团队合作在Nature上发表了题为“Structural basis of archaeal ...

然而作为第三生命域的古菌，其因子依赖型转录终止的机制尚未被阐明。 古菌转录终止因子FttA（Factor terminates transcription in Archaea），也称作aCPSF1（Archaeal cleavage and polyadenylation specificity factor 1），是真核生物整合子复合物（INT）中INTS11亚基和切割与加聚腺苷酸 ...

Recent scientific discoveries highlight the dual nature of ancient meteorites as both destructive and nurturing forces on ...

now report a fifth pathway that is used by archaea from diverse habitats. The best-known autotrophic pathway is the Calvin–Bassham–Benson cycle, which is present in plants, algae ...