For more than 150 years, scientists have debated whether Prototaxites—which stood roughly 24 feet tall and 3 feet wide—were ...

Life on Earth began over four billion years ago, not long after the Earth was ... known as cryptobranchids that stretches back over 150 million years, making it one of the oldest amphibian groups ...

A crater at the edge of the Yucatán peninsula in Mexico was created by a massive asteroid that hit Earth 66 million years ago At the end ... left a crater over 150 kilometres wide, centred ...