We explore the difference between the constant speed of light in a vacuum and its slower group velocity in dense mediums ...

How do we know the speed of light – and why does it have a speed limit at all? Leah Crane explores the history of one of the ...

Speaking from experience, when you go for a run and someone considerably older—who's slow running and doesn’t look like they’ve put much time into their fitness—passes you without appearing to make a ...

Second, and much closer to home, is the mass of the Earth itself. If you have ever seen figure skaters, you know that when ...

It's time to fall back. Daylight saving time ends this weekend. On Sunday, Nov. 2, at 2 a.m., clocks will "fall back" to standard time, where they will remain until next spring. Since we gain an hour, ...

Shopping for internet service can feel overwhelming when you’re faced with dozens of plans, speeds and pricing options. Every provider promises fast and reliable service, but figuring out what you ...

Daylight Saving Time will end on Sunday, Nov. 2, 2025, when clocks "fall back" one hour at 2 a.m. Despite past efforts like the Sunshine Protection Act, there is no permanent end to the time change ...

Daylight saving time will end on Sunday, Nov. 2, 2025, when clocks "fall back" one hour at 2 a.m. Despite the Senate passing the Sunshine Protection Act in 2022, there is no permanent end to the time ...