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

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 ...

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.

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

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 ...

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 ...

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 ...

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.

As life evolved on Earth, it used and created minerals for exoskeletons and habitats. The hundred minerals present when life first formed have grown to about 5,000 today. For example, zircons are ...

Why it's incredible: The rock formations contain traces of the earliest life-forms on Earth. The Bungle Bungles are a collection of sandstone towers with distinctive orange and dark-gray stripes ...