Dark matter is an elusive type of matter that does not emit, reflect or absorb light, yet is predicted to account for most of the universe's mass. As it cannot be detected and studied using ...

Once upon a time, four queens known as the queens of blue, red, green and pink were locked in a bitter feud. The monarchs lived on four islands, all the same size, yet each with its own distinctive ...

“Anyone concerned about the unchecked power of private companies to orchestrate sweeping change in our communities should pay close attention.” September 6, 2023: Jackie Lara at a protest at the ...

In 1876, Peter Guthrie Tait set out to measure what he called the “beknottedness” of knots. The Scottish mathematician, whose research laid the foundation for modern knot theory, was trying to find a ...

Authorities announced Friday that they had made an arrest in the shooting death of right-wing activist Charlie Kirk in the midst of rampant public speculation about the suspect’s identity. “We got him ...

Once a century, a very special day comes along. That day is today — 9/16/25. Pi Day (3/14) often comes with sweet treats; Square Root Day (4/4/16 or 5/5/25, for example) has a certain numerical rhyme.

PHILADELPHIA – Here is something you probably didn't learn about George Washington in elementary school. When he lived in Philadelphia – back when the city was the temporary capital of the U.S. – ...

Buying the right camera, lens, accessory or software to suit your photography is really important. Our product reviews offer independent views with hands-on opinion and honest verdicts aimed to give ...