How to request a read receipt in Microsoft Outlook and know when someone has opened your email

While drafting your email, you can request a read receipt in Outlook to inform you of when your recipient opens your message.

How to read your blood pressure and understand what it means for you

To read your blood pressure measurements, it's important to know what's considered hypertension, and when you should seek ...
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Two bright comets will swing by Earth this month. Here’s how to see them

Comets SWAN and Lemmon will both swing by Earth and appear bright in the sky near the end of October. Here’s how to see them.

Good Question: How do you measure rainfall to one-hundredth of an inch?

The tube is 20 inches long but only holds two inches worth of rain. Getting those precise measurements is possible because ...