Sixty-six million years ago, a 6 mile wide asteroid slammed into Earth and erased more than 75% of life on Earth in a geological instant. The catastrophe that ended the age of Tyrannosaurus and ...

Roughly 2.5 million years ago, a nearby star exploded. Around the same time, the diversity of viruses infecting fish in Africa’s Lake Tanganyika rose dramatically. Three researchers from the ...

National Research Council (U.S.) Board on Earth Sciences and Resources "The hominin fossil record documents a history of critical evolutionary events that have ultimately shaped and defined what it ...

A composite view of the Earth constructed by NASA from multiple satellite images Editor at Large Human evolution is a story writ slow. It’s been about 3.8 billion years since life on Earth emerged and ...

Some 2.5 million years ago, viruses in Lake Tanganyika experienced an unexplained explosion in diversity. A new study analyzing iron-60 found in the lakebed suggests that the explosion of a ‘nearby’ ...

Geodynamics : the unanswered questions / A.L. Hales -- A global geochemical model for the evolution of the mantle / D.L. Anderson -- Temperature profiles in the earth / O.L. Anderson -- The structure, ...

Life on Earth has made several “great leaps” in its evolutionary history: from unicellularity to multicellularity, from sea to land, and from land into the skies. What if the next one lies beyond our ...

During a brief but dramatic chapter in Earth's history about 41,000 years ago, the planet’s magnetic field nearly collapsed. What followed was a cascade of environmental and biological changes that ...

(Phys.org) -- Caltech has taken over operation from NASA of the Galaxy Evolution Explorer (GALEX), a space telescope that for the last nine years has been surveying the cosmos in ultraviolet light. In ...