"It could represent some of the oldest and most pristine water ever observed, formed in another planetary system and ...

If they hadn't paid attention to the fluctuating readings of Earth's ozone layer, humans would have probably died by now.

The ice cores could offer clues about a period known as the Mid-Pleistocene Transition that has long puzzled scientists ...

Time is what we want most, but use worst,” William Penn once wrote. But for the first time in the annals of modern times, the very fabric of timekeeping is being threatened by no human weakness, but ...

The story begins in 1835, when the first of what would become thousands of dams was built. These human-made reservoirs store ...

Earth is spinning faster this summer, making the days marginally shorter and attracting the attention of scientists and timekeepers.July 10 was the shortest day<a class="excerpt-read-more" href=" More ...