Humans track time in seconds, minutes, and hours, and these measurements are dictated by Earth's rotation on its axis and the sun's position in the sky — what's called the solar timescale.

Moments in human history are etched into the Earth. Now researchers are piecing together evidence of our impact on the planet ...

Are humans the only species to drive another to extinction? Tom Ruppel | Dixon, California ...

NASA scientists have uncovered significant changes in the global water cycle over the past two decades, largely driven by ...

These are obvious signs that Earth has intelligent ... Technosignatures are often associated with human technological activities, and some of these could be visible across enormous distances ...

ALIENS could discover humans on Earth by spotting one of 12 signs, scientists say. Topping the list is a clue that could be seen by extraterrestrials from a mammoth 12,000 lightyears away.

The study results suggest that Earth system models used to simulate the future global water cycle should evolve to integrate the ongoing effects of human activities. With more data and improved ...

As global temperatures rise, more regions are experiencing heat levels that exceed the human body's ability to cool itself.

The climate crisis has gone so far that it's altering the shape and spin of our planet, and changing our experience of time itself, according to a new study published in the journal Nature on ...