It's Saturday! This week, in an eminently practical analysis of the Boltzmann brain conjecture, physicists put constraints on ...

More than 3.5 billion years ago, the Earth was not the hospitable world we know today. The atmosphere lacked oxygen, the seas ...

Over 150 years ago, a fossilized organism known as Prototaxites emerged as an enigma regarding what early land life may have ...

Ushikuvirus is a newly identified giant virus that infects amoebas, adding to a growing group of oversized viruses that scientists believe may have played an important role in the emergence of complex ...

The origin of life on Earth becomes even more fascinating and complex as we peer into the mysterious world of viruses.

The origin of life on Earth becomes even more fascinating and complex as we peer into the mysterious world of viruses. Said to have existed since living cells first appeared, these microscopic ...

The diversity of eukaryotic and prokaryotic communities has been assessed by morphological and genetic approaches, which are used to characterize the microbiota in different environments. Here, ...

Cells are the basic building blocks of life—the smallest units that can do all the jobs a living thing needs. Most cells fit into two groups: prokaryotes and eukaryotes. The most significant ...