A team of MIT geochemists has unearthed new evidence in very old rocks suggesting that some of the first animals on Earth were likely ancestors of the modern sea sponge. Subscribe to our newsletter ...

A team of scientists digging up some of the Earth’s oldest rocks has uncovered new chemical evidence that Earth’s first animals were likely ancestors of the modern sea sponge. The discovery relies on ...

Something odd keeps showing up in marine sediments. These are huge magnetite crystals created by biology rather than geology that have been preserved for tens of millions of years. They are known as ...

Scientists found 97-million-year-old magnetic fossils in deep ocean sediments. Fossils helped ancient animals navigate using Earth's magnetic field. Discovery shows early animal navigation, indicating ...