Hair loss is an issue often associated with men but 40 percent of women says they experience it by age 40 so dermatologist Dr ...

A new study highlights how life possibly evolved prior to and during the rise of Earth’s oxygenated atmosphere.

Oxygen, in the amount current life seems to need, didn't emerge until relatively late in the planet's evolutionary history, only as early as around 3 billion years ago. But life emerged prior to ...

Precambrian time covers the vast bulk of the Earth's history, starting with the planet's creation about 4.5 billion years ago and ending with the emergence of complex, multicelled life-forms ...

Around one to two billion years ago, this mega-asteroid broke apart in the Asteroid Belt, producing a chunk of rock that us ape-like inhabitants on the Solar System’s third planet would one day ...

But go back a couple of billion years and things would ... ocean-dwelling life forms which appeared about 700 million years ago and disappeared around the time of the so-called Cambrian explosion ...

When the moon first formed 4.5 billion years ago—and was much closer to Earth—a day on Earth lasted about ... sun’s atmospheric tide. “It’s like pushing a child on a swing,” said ...

All animal evolution for the last half billion ... years ago, providing fuel for movement and the evolution of more complex body structures. Others propose that an extinction of life just before ...