Scientists find oldest known solid on Earth
Scientists have found a crystal believed to be at least 4.3 billion years old, making it the oldest known solid on Earth. And they say its sparkling facets contain hints that oceans, continents and
Scientists have found a crystal believed to be at least 4.3 billion years old, making it the oldest known solid on Earth. And they say its sparkling facets contain hints that oceans, continents and