In the discussion we assess meteoritic in-fall as the source of this lattice material. Present-day stromatolites are supplied by Andrew Knoll of the Museum of Comparative Zoology and Organismic and ...

Warrawoona Group stromatolites (3.46 billion years old ... of the sediment and were later trapped and preserved to the present day. These bacteria fossils are only 10–20 micrometers long ...

Researchers studying carbon emissions from ancient volcanoes are exploring the geology of large dikes, such as this one in ...

"Picture yourself standing off the coast of Cape Cod, in a shelf of shallow water," said Nadja Drabon, an early Earth ...

A gigantic space rock that slammed into Earth more than three billion years ago grievously wounded the biosphere—and then helped it heal ...

The 4,500-year-old pyramids of Giza are the backdrop for "Forever Is Now," which features sculptures, installations and ...

The essay also looks at the push-pull factors that have helped define demographic trends in the United States to present day and also covers some darker periods of American history, including the ...

It is a time designated to honor and recognize the contributions, sacrifices, and service of the members of the armed forces, past and present ... including Loyalty Day, established in 1921 ...

From the medieval period to the present day, the nature and extent of crime, the enforcement of law and order, and society's punishment of offenders has changed. Various factors have influenced ...

The treatment of illness and disease has changed due to improvements in medical knowledge. Treatments have become increasingly successful. How have attempts to treat illness and disease changed ...

To learn more, visit jw.org. This article originally appeared on Tallahassee Democrat: Jehovah's Witnesses present 3-day convention this weekend ...

The oldest holiday of American origin on the calendar, Thanksgiving recognizes the first successful harvest by Puritan settlers at Plymouth in present-day Massachusetts, and the subsequent ...