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What is your reaction to this decision by Angelina Jolie? Was the risk great enough to warrant the preventative surgeries?
 
Yani calibrates radiation survey meters and monitors the safety situation in laboratories to make sure radiation protection programs are in place.
 
Coverage from Hatch Opening to Soyuz Landing of Commander Hadfield's trip back home.
 
DNA barcoding is helping in the fight against diseases like malaria, sleeping sickness, and avian influenza.
 
Julie analyzes the potential health effects of radiation exposures on people & helps keep nuclear energy workers - and the public - safe!
 
We all have biological clocks ticking away inside us.
 
In a groundbreaking operation in April 2013, a 2 ½-year-old girl received a functioning trachea (windpipe) after breathing through a plastic tube in her neck since she was born.
 
Hashing is a common method that websites use to help protect your security.
 
Any short password that isn't a random collection of letters, numbers and special characters makes you vulnerable to hackers.
 
Paul is an engineer working in space robotics, using science and math to solve people's problems.
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