Are pulse oximeters accurate?

This testing compares the pulse oximeter saturation readings to arterial blood gas saturation readings for values between 70-100%. The typical accuracy (r...

Can obsidian cut through DNA?

TIL Obsidian Blades are so sharp that they can cut cells and DNA. They are used are used in modern medicine because the sharp blades create incisions whic...

Can I drive after one beer UK?

You can get more info on this at GOV.UK. Because alcohol affects each person differently, there's no foolproof way of drinking and staying under the ...

Why did Rose change her mind?

Rose was very pessimistic about her future before meeting Jack, due to the first-class life she was being pulled into by Cal and Ruth. She had convinced h...