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Barack Obama and Malia Obama

Chip Somodevilla/Getty Images

Famous people born on the Fourth of July

Before you head out for some barbecue or to catch some fireworks, this Independence Day, check out some famous people who really were born on the Fourth of July.

Butter, margarine, bread

SXC

Butter not as bad as you thought, study suggests

Have we gotten the health risks of butter all wrong?

Fireworks tent, 4th of July

Joe Raedle/Getty Images

As fireworks laws are relaxed, injuries increase

Fireworks are synonymous with Fourth of July celebrations. But as entertaining as sparklers, bottle rockets and other consumer items can be, they're also responsible for many injuries, which can sometimes result in death.

Smog Free Tower

Studio Roosegaarde via CNN

World's largest air purifier takes on China's smog

When artist Daan Roosegaarde visited Beijing in 2014, he was inspired by what he didn't see.

Rachel McAdams

Alberto E. Rodriguez/Getty Images

Oh, Canada! 40 gorgeous Canadian actresses

With Canada Day on July 1, turn your attention to the 40 hottest actresses from our neighbor to the north.

Google-crib

U.S. Patent and Trademark Office via CNN

Google publishes patent for smart crib

Google wants to cram as many baby monitoring devices as possible into a single crib.

3-D blind art museum

CNN

Opening up art for the blind, with 3-D

Luc was only 7 years old when his world went dark and he became blind unexpectedly. But as he likes to say, blindness isn't very effective on him.

Even with his can-do attitude, the 13-year-old recalls feeling excluded when he visited a museum exhibi...

Hand sanitizer

iStock/unconcerned

Is your hand sanitizer safe? The FDA wants to know

Alcohol-based hand sanitizers are everywhere these days, and the Food and Drug Administration wants to know more about them. It requested more scientific evidence Wednesday to prove that hand sanitizers are both safe and effective.

Funeral, mourners, cemetery

iStock

What's the No. 1 killer of Americans?

The leading causes of death remained the same from the year before: Heart disease is the No. 1 killer, followed by cancer, according to the U.S. Centers for Disease Control and Prevention, and infant mortality decreased 2.3%.

Woman, Exercise At Home, Pilates

©iStockphoto.com/ImagesbyTrista

Study: Nap or exercise to improve your memory

Scientists have unlocked new secrets for boosting memory retention: One involves breaking a sweat, and the other involves taking a snooze.

Mosquito Zika virus

Public Domain

Can you get Zika twice?

Once you've had Zika, can you get it again? Scientists don't think so, but it's never been proved

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