American and Canadian scientists have reported in the latest issue of Science that the magnetic field of our planet is at least 4 billion years old, up...
A massive volcanic eruption in what is now India about 250,000 years before the cataclysmic Chicxulub asteroid impact may have played a role in the extinction...
A small fragment of a mineral called zircon extracted from a remote rock outcrop in Australia confirms that the Earth’s crust first formed at least 4.4...
