3 trends tracked about this subject — the full history, oldest to newest below.
NASA has released a gravity-based model revealing that Earth's true shape, known as the geoid, is irregular and neither flat nor oval.
Research on 3.1 billion-year-old Australian rocks indicates water played a significant role in early Earth's volcanic activity and interior processes.
Scientists have uncovered a massive underground fungal network stretching 110 quadrillion kilometers, prompting comparisons to science fiction.