Artificial intelligence sometimes discriminates by race and sex. Rights-based regulations are needed to ensure that AI will not exacerbate inequalities.

Fossil footprints discovered in White Sands National Park, New Mexico, are the oldest known in the Americas. These footprints date back 23,000 years.

The Bible story of Sodom and Gomorrah describes ancient cities destroyed for their wickedness. New research suggests a meteor impact instead.

What is time, and why does it move forward? Cosmologist Thomas Kitching of University College London explains how the arrow of time points to the future.

Sex in space has been a taboo subject for decades. But, these authors point out, it'll be necessary for the survival of the human race.

New NASA drought research is showing how the U.S. Southwest might change in the future, under different scenarios of adaptation and mitigation.

Increasingly, people oppose owning reptiles as pets, believing they pose a danger to public health or are too cold to love. Why do reptiles get a bad rap?

Hurricane Ida hit the Louisiana coast with 150 mph (240 km/h) winds on August 29, 2021, 16 years to the day after Hurricane Katrina devastated New Orleans on nearly the same path. What does climate change have to do with these powerful storms?

Can you travel to outer space and never stop? Science can tell us a lot. But some things we don’t know yet, like whether space just goes on forever.

Can we recreate dinosaurs from their DNA? Maybe we could, if dinosaur DNA still existed. But DNA breaks down after some 7 million years.