Benzalkonium chloride (BAK) is a common preservative composed of quaternary ammonium compounds with 8–18 carbon alkyl chains, mainly C12, C14, and C16 homologs. Because BAK can adsorb to surfaces, ...

Imagine a surgeon in the middle of a complex operation, able to get instant biochemical feedback not from a lab down the hall ...

It's Sunday again, and that means one thing - time for the Lazy Sunday Quiz! Grab yourself a brew and get ready to test your general knowledge with these 10 questions. To get full marks, you'll need ...

We have 20 pub quiz question for you to answer today. Our Friday pub quiz features lots of topics for you to tackle with questions this week on phobias, US states, Olympic games and Star Trek. The ...

Starting October 20, 2025, all applicants filing Form N-400, Application for Naturalization, will need to take the newly updated 2025 citizenship test instead of the older 2008 civics test version.

The Minnesota Bureau of Criminal Apprehension (BCA) confirms that some DWI test results in Aitkin, Winona and Chippewa counties may be affected by “instances of dry gas cylinders being installed ...

Some Western Pennsylvania educators are pushing back on a national report indicating a decline in math and reading test scores among high school seniors. The report, released by the National Center ...

We have 20 pub quiz question for you to answer today. Our Friday pub quiz includes plenty of topics for you to tackle and this week there are questions on Gavin and Stacey, the periodic table and the ...

The North East of England has a rich heritage when it comes to the subject of rock and pop music. Continuing with our just-for-fun quizzes, this time around we’re inviting you to answer 25 questions ...

(NEXSTAR) — As part of a “multi-step overhaul” of the naturalization process, the U.S. Citizenship and Immigration Services announced Wednesday that it is expanding and altering its Naturalization ...

The Trump administration said the more complex test is the “first of many” changes to acquiring U.S. citizenship. By Jenny Gross The U.S. government will reinstate a harder citizenship test that ...