E o milhar de milhão chato?

Conhecem? (Boring Billion)
Infografia com a evolução da vida na terra:
https://phys.org/news/2018-08-timescale-evolution-life-earth.html

Citando:
""Combining fossil and genomic information, we can use an approach called the 'molecular clock' which is loosely based on the idea that the number of differences in the genomes of two living species (say a human and a bacterium) are proportional to the time since they shared a common ancestor."

By making use of this method the team at Bristol and Mark Puttick from the University of Bath were able to derive a timescale for the history of life on Earth that did not rely on the ever-changing age of the oldest accepted fossil evidence of life.

Co-author Professor Davide Pisani said: "Using this approach we were able to show that the Last Universal Common Ancestor all cellular life forms, 'LUCA', existed very early in Earth's history, almost 4.5 Billion years ago—not long after Earth was impacted by the planet Theia, the event which sterilised Earth and led to the formation of the Moon."

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NASA e vida em Marte?

Cientista acusa NOSSA de não querer aprofundar:
https%3A%2F%2Fwww.dailystar.co.uk%2Fnews%2Fworld-news%2F686167%2Falien-news-nasa-mars-mission-evidence-space-science-barry-digregorio

Vida en Marte? (Atacama)

https://newatlas.com/baterial-bloom-atacama-mars/53578/

Citando:
"If the prospects of life on Mars were a pendulum, it's just swung back toward "favorable." An international team of researchers led by Washington State University planetary scientist Dirk Schulze-Makuch has found that the most Mars-like, apparently lifeless spot on the face of the Earth isn't so lifeless after all. Areas of the hyperarid Atacama Desert once thought lacking even microbes is showing blooms of specialized bacteria after rainfall, providing hope that similar dormant colonies may exist on the Red Planet.

The Atacama Desert is about as close to Mars as you can get on Earth. The Chilean desert has areas that are so inhospitable to life that not even bacteria can survive under normal circumstances. The nitrates falling from the sky that bacteria would normally gobble up remain uneaten and rainfall is measured in millimeters per decade. Though the 10 million-year-old desert is surprisingly cool with a Mediterranean climate, there isn't enough water to sustain life. Worse, the cooler temperatures means there's less energy available for growth and reproduction."

Fósseis mais antigos da Terra?

http://www.history.com/news/have-scientists-found-the-worlds-oldest-fossils

Citando:
"the world’s oldest fossils, dating back some 3.77 billion years (and possibly as far back as 4.28 billion years). The remarkable find, detailed yesterday in the journal Nature, is comprised of a series of microscopic filaments and tubes that researchers believe were formed by bacteria that thrived on iron. If proven true, the fossils would be the oldest direct link to life on Earth—but not everyone is on board with the stunning discovery."

Complex organisms emerged on Earth a billion years earlier than previously believed | Daily Mail Online

Complex organisms emerged on Earth a billion years earlier than previously believed | Daily Mail Online



Citando:

"1.56 billion year-old fossils from China were multi-cellular organisms
Four distinct shapes of eukaryotes were found in mudstone deposits
Researchers think they probably used photosynthesis for energy"

"WHAT IS EUKARYOTIC LIFE?
Every complex organism living on the Earth is made of eurkaryotic cells from plants to animals and even fungi.
These cells have genetic material that is bound within a membrane along with other organelles such as mitochondria or chloroplasts.
They are thought to have first emerged on Earth when prokaryotic cells such as bacteria began incorporating other cells into them.
They were thought to have first emerged between 1.6 billion and 2.1 billion years ago but may not have started forming complex organisms until much later."