New research offers a potential explanation for the formation of early Earth protocells. Few questions have captivated ...

Scientists have found what seems to be the oldest direct evidence of hot water flowing on Mars during its ancient past. The ...

However, we did not find evidence for photosynthesis (which some bacteria ... and life itself must have evolved rapidly, almost right after the Earth was formed. Our reconstruction of Luca is not the ...

Our ancestors had no problem with the idea that the sun would rise and set every day, providing light and warmth, forever.

Earth, between sweltering Venus and frozen Mars, formed and orbits within a band where water could persist in solid, liquid, and gaseous phases. Mars had surface water, but not as much as Earth, and ...

Finding evidence for the first life ever to emerge on planet earth is a long, tough slog. But oddly enough, real answers may ultimately come from Mars.

Did the basic components of life arise on Earth or among the stars? While there are multiple theories, they all share some basic assumptions that there are four essential components to life, and they ...

Few questions have captivated humankind more than the origin of life on Earth. How did the first living cells come to exist? How did these early protocells develop the structural membranes necessary ...

All known life forms are made up of cells enclosed by lipid membranes that separate and protect the cell’s contents. The ...

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Emerging evidence suggests that plate tectonics, or the recycling of Earth's crust, may have begun much earlier than ...

Nora Carol Photography / Getty Images Every employee, full-time or part-time, must complete a W-4 form to determine tax withholding from their paychecks. If you're switching jobs and haven't ...