Learn about new evidence that suggests life on Earth may have started with the help of molecules that were delivered by ...

What water, chemistry and temperature cycles fostered the chemical reactions that allowed life to emerge on our planet? Because life arose in the largely unknown surface conditions of Earth’s early ...

By exposing organic molecules to repeated wet-dry cycles, researchers observed ... the molecular complexity needed for life to emerge. To simulate early Earth, the team subjected chemical mixtures ...

This daily feast-and-famine cycle in oxygen availability created an intense physiological challenge for early animals, forcing them to develop adaptations to handle fluctuations in nutrients. For ...

unnoticed ways the Moon shapes the course of life on Earth. 'The Moon has been up there as long as evolution has been taking place, and lunar rhythms are embedded in the life cycles of many organisms, ...

Understanding early life on Earth has been frequently stalled by ... Orbital variations, known as Milankovitch cycles, influence global climate over tens to hundreds of thousands of years.

Samples drilled by the Curiosity rover on Mars have revealed abundant signs of a carbon cycle that remained hidden from ...

A new study reveals significant changes in the global freshwater oxygen cycle. Rivers, streams, lakes, and reservoirs aren’t just beautiful features of the landscape, they’re vital to life on Earth.

All organisms on Earth ride upon a "ferrous wheel" made of different forms of iron that are essential for life. Aa Aa Aa Biogeochemical cycles describe pathways by which chemical elements move ...

To complete the arctic fox's life cycle. Life cycles are as varied and diverse as life on Earth. Whether it's a mammal, like the arctic fox, or a bird, or a plant or an insect, different groups of ...