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Colorado marijuana's potency five times US average

More than two years after Colorado began selling marijuana for recreational use, cannabis consumers have access to pot that is more potent than ever.

Headache file


How your mouth is linked to your migraines

Your vision starts to blur. You see flashing lights. You feel that familiar throbbing pain in your head grow stronger and stronger.

Storm - California3

Wanda Gemson/via CNN iReport

Researchers: We are 'risk-stupid''

Most of us are aware of these and other risks in our lives. Yet we are terrible at estimating how likely we are to be affected by them.

Wedding gift


Bride loses 100+ lbs after engagement wake-up call

What would it take for you to change your life? For Texas woman Haley Smith, a single joyful moment became a wake-up call.

Ashton Kutcher

Robert Cianflone/Getty Images

Worst celebrity Twitter gaffes

It seems that as long as Twitter has been around celebrities have been raising eyebrows with controversial tweets. Here are some of the worst celebrity Twitter gaffes.

nose 2


Surgeons use nose cells to repair knee joints

Swiss surgeons successfully used an experimental technique, which includes harvesting cells from the nasal septum, to repair damaged knee joints in patients. Two years later, these patients report improvements in pain and knee function, according to ...

Baby born twice

Courtesy Paul Vincent Kuntz via CNN

Meet the baby who was born twice

Margaret Boemer went for a routine ultrasound 16 weeks into her pregnancy with her third child. She quickly found out that things were far from routine.

HIV test

Wodicka/ullstein bild via Getty Images

STD rates reach record high in United States

There were more reported cases of sexually transmitted diseases last year than ever before in the United States, according to the latest STD surveillance report by the Centers for Disease Control and Prevention.

Zika mosquito


CDC advises pregnant women who visited Miami-Dade

Pregnant women who have "lived in, traveled to, or had unprotected sex with someone who lived in or traveled to Miami-Dade County" since August 1 should be tested for the Zika virus, the Centers for Disease Control and Prevention said Wednesday.

New Instagram logo

Instagram via CNN

Instagram launches suicide prevention tool

Instagram is launching a new suicide prevention tool designed to reach out to users at risk of self-harm.

head scan, brain

freeimage.scom/Max Brown

Do brain-training exercises really work?

A battle has been brewing over whether brain training really works, leaving consumers stuck in the middle, scratching their heads.

Many experts believe that brain-training programs are a waste of money. They roll their eyes at the idea that using such...