Food
How Long Does Cooked Rice Last? US 3-4 Days, UK 24 Hours
USDA allows 3 to 4 days for cooked rice in the fridge; UK agencies say 24 hours. Why they differ, and the cooling and reheating rules that matter more.
Explained
Work
How Many Hours Is Full Time in the US? 30, 35 or 40
The US has no single full-time rule: 40 hours triggers overtime, the IRS uses 30 for employer coverage, BLS counts 35, and pay math assumes 2,080.
History
Why a Week Has 7 Days: Babylon, Seven Planets and Rome
The 7-day week doesn't fit the 29.53-day lunar month. It comes from Babylon, the Jewish Sabbath and Rome's planetary week, made official in 321 CE.
Science
A Cloud Can Weigh 1.1 Million Pounds. Here's Why It Floats
A typical cumulus cloud holds about 1.1 million pounds of water. It floats because its tiny droplets fall about 1 cm a second, slower than rising air.
Travel
Why the US–Europe Time Gap Shrinks by an Hour Every Fall
Europe turns its clocks back a week before the US, so for seven days New York is four hours behind London. The 2026 dates and what shifts.