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All the smart facts you want to know on topics, events and people throughout history. 


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How to protect yourself from mosquito bites How to protect yourself from mosquito bites How to protect yourself from mosquito bites

How to protect yourself from mosquito bites

BSIP / UIG via Getty Images
What is listeria? Facts you need to know What is listeria? Facts you need to know What is listeria? Facts you need to know

What is listeria? 5 things you need to know

Dado Ruvic / Reuters
What is Bitcoin? Should you invest in it? What is Bitcoin? Should you invest in it? What is Bitcoin? Should you invest in it?

Bitcoin 101: What is it and should you invest?

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What is gaslighting? And how do you know if it's happening to you? What is gaslighting? And how do you know if it's happening to you? What is gaslighting? And how do you know if it's happening to you?

What is gaslighting? And how do you know if it's happening to you?

Aminu Abubakar / AFP - Getty Images file
What is Boko Haram, the militant group terrorizing Nigeria? What is Boko Haram, the militant group terrorizing Nigeria? What is Boko Haram, the militant group terrorizing Nigeria?

What is Boko Haram, the militant group terrorizing Nigeria?

Kenny Katombe / Reuters
What is Ebola? The new outbreak in Congo explained. What is Ebola? The new outbreak in Congo explained. What is Ebola? The new outbreak in Congo explained.

What is Ebola?

What is Obamacare? ACA basics

What is Roe v. Wade? Everything you need to know

What is gun control? What you need to know

What is transgender identity? Transgender 101

What is the Iran nuclear deal?

What is norovirus? Symptoms to know and how to prevent infection

What is pneumonia? Symptoms and treatment

What Is WikiLeaks? Everything you need to know

What is the Zika virus? What you need to know

What are the measles? Symptoms, Causes and more.

What is NATO? And what do Trump and Russia think about it?

What is Shariah law?

What is ISIS? What you need to know about Islamic State in Iraq and Syria

Barbara Bush is choosing 'comfort care.' What does it mean? More than you may think.

What is a heart attack? The symptoms you need to know

What is immigration reform?

What is a hurricane? Facts to know

Identity theft: The facts, the risks, and what consumers can do

What is lupus? Lupus facts, symptoms and more.

What is DACA? What you need to know.

What is Bitcoin? Should you invest in it?