The origins of life on Earth have long fascinated scientists, particularly the nature of the last universal common ancestor ...

Although these new life-forms spread worldwide ... The Mistaken Point fossils, going back 570 million years, are the earliest evidence on Earth of large, biologically complex beings.

The paper shows how Earth's earliest life forms—microbes such as O 2-producing bacteria and methane-producing archaea—shaped, and were shaped by, changes in the oceans, continents, and atmosphere.

A new study suggests that the explosive deaths of the universe's earliest stars created surprising quantities of water that ...

In a new peer reviewed analysis, scientists quantify amino acids before and after our “last universal common ancestor.” The ...

If liquid water and elevated crust existed so early in Earth’s history, was life present as well? There is carbon isotope evidence for life in the world’s oldest known volcanic-sedimentary ...

Subsequent studies continue to debate the belt's exact age. Some researchers have also suggested the belt contains evidence of Earth's earliest life — traces of bacteria dating to between 4.3 billion ...

Water is the essence of life. Every living thing on Earth contains water within it. The Earth is rich with life because it is ...

In the orange layers, the rock dried out too quickly for the microscopic algae — also known as cyanobacteria, the earliest known form of life on Earth — to grow, according to the DBCA.

multicelled life-forms almost four billion years later. What Was Happening on Earth at This Time The Precambrian is the earliest of the geologic ages, which are marked by different layers of ...

The earliest humans emerged about 300,000 years ago. While many of Earth’s earliest life forms have long since gone extinct, some animals have stood the test of time–surviving through mass ...