This is the weekend we "fall back" here in the U.S. Are you glad? Sad? Mad? Advocates say daylight time saves energy and wins wars. Studies show injuries and illnesses rise when clocks change.

Three spooky Halloween animals see better at night than we do. Here’s how they do it.

The European Space Agency was asking this question late last week, as multiple fires burned across the globe. Read more about 2019 fires, and fire-tracking via satellite, here.

Astronomers in Poland have just published the 1st peer-reviewed paper on the 2nd interstellar visitor, now officially labeled as a comet, 2I/Borisov. Plus check out the new Hubble Space Telescope image of this object.

Watch 2 NASA astronauts aboard the International Space Station (ISS) make history by performing the 1st ever all-female spacewalk on Friday.

New research suggests that the tiny human species - that survived until about 18,000 years ago, later than any human species other than our own - evolved its small size remarkably quickly while living on an isolated island.

Research involving a non-invasive scan of living human embryos shows that some muscles, thought to have been abandoned by our mammalian ancestors 250 million years ago, are still present before birth. They're among the oldest, albeit fleeting, remnants of evolution yet seen in humans.

Our global human population was estimated to reach 6 billion on today's date in 1999. Eleven years later, in 2011, Earth had gained another billion people. Today - October 12, 2019 - it stands at about 7.7 billion, according to United Nations estimates.

International Observe the Moon Night is a worldwide celebration of lunar science and exploration, celestial observation, and our cultural and personal connections to the moon. In 2019, it comes on October 5. Here's how to join in.

In October 2019, the research icebreaker Polarstern will drop anchor at an ice floe in the northern Laptev Sea, to spend a year investigating Earth’s Arctic.