the origin of life

All Life on Earth is Made up of the Same 20 Amino Acids. Scientist Now Think They Know Why

All Life on Earth is Made up of the Same 20 Amino Acids. Scientist Now Think They Know Why

The question of how life on Earth first emerged is one that humans have been asking themselves since time immemorial. While scientists are relatively confident about when it happened, there has been no definitive answer as to why it did. How did amino acids, the chemical building blocks of life, come together roughly four billion years ago to create the first protein molecules?

Study suggests asteroids and other objects might play key role in spreading the seeds of life

Study suggests asteroids and other objects might play key role in spreading the seeds of life

Picture this: A bacteria-carrying asteroid is ejected from the center of the galaxy into the far reaches of space only to be “captured” by a distant solar system, potentially bringing life to a new world.

Research provides a new scenario for the origin of complex life

How did complex life arise on Earth about two billion years ago? Research by an international team of scientists from Sweden, the United States, Australia and the Netherlands now provides a new perspective on the matter. In a study published this week in Nature Microbiology, the team presents a new model about the first complex cell types that make up plants, fungi, but also animals and people. They describe how complex cellular life forms developed in evolution through the metabolic integration of simpler cell types.