Latest articles by Marilyn Perkins
Periodic table of elements: How it works and who created it
The Periodic Table, first created by Dmitri Mendeleev, organizes all of the known elements in an informative array.
Pangaea: Discover facts about Earth's ancient supercontinent
Pangaea is Earth's most recent supercontinent, which existed 320 million to 195 million years ago.
Can viruses cause cancer?
The far-reaching impact of certain viruses on the body can make cells grow out of control, causing cancer.
How to turn off web notifications for Google Chrome and macOS
Here's a handy guide on how to turn off web notifications for Google Chrome and macOS.
Why do hangovers get worse with age?
Scientists haven't actually confirmed a link between age and hangover severity, but there are some reasons why older people might feel worse after a night of drinking than young folks would.
Keeping time: The history, origin and meanings of B.C. and A.D.
The use of "anno domini" and "before Christ" to mark time began in the early days of Christianity, when clerics needed to know when Easter would fall.
How long is the flu contagious?
Many factors affect the infectious period of seasonal influenza, commonly called "the flu," but there are some good rules of thumb for when it's safe to return to work or school.
Why does meat have more protein than vegetables?
The biological needs of plants and animals affect their cells' protein content, but the story goes deeper than that.
Why do we forget things we were just thinking about?
When the brain "juggles" information, things can fall through the cracks.
Are people more honest when they're drunk?
Drinking can change the brain in a way that makes people more likely to speak their mind, but the effects aren't always straightforward.
