For more than 150 years, scientists have debated whether Prototaxites—which stood roughly 24 feet tall and 3 feet wide—were an early lichen or fungus, like a “giant mushroom” ...

Interactions between Earth and the solar system have profoundly shaped the planet’s history, influencing evolution and climate. One striking example is the asteroid impact 66 million years ago ...

All kinds of animals use conspicuous colors. Research from biologists at the University of Arizona found it's a quirk of ...

Over two hundred fifty million years ago, India, Africa ... the collision of India with Asia we must first look beneath the Earth's surface. The continents are carried by the Earth's tectonic ...

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 ...