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Tweets to make you smile: The secret to happiness, straight from the experts
By
Meera Senthilingam,
for CNN.
updated 5:26 AM EDT, Fri October 3, 2014
Part of complete coverage on
Vital Signs
Robot skeleton changes girl's life
updated 5:58 AM EDT, Wed April 2, 2014
A 3-D printed exoskeleton is helping children with a rare neuromuscular disease.
3-D printed arm gives boy hope
updated 7:09 AM EDT, Wed March 19, 2014
Artificial limbs made by 3-D printing are changing the lives of amputees in Sudan.
Making drinking water from air
updated 6:02 AM EDT, Thu April 24, 2014
A device for extracting water from air is being used by the military -- could it help developing countries too?
Smog-guzzling buildings fight pollution
updated 5:31 AM EDT, Fri May 23, 2014
Air pollution is now the biggest global environmental killer, but these high-tech solutions could save lives.
Return of the 'White Plague'
updated 1:18 PM EDT, Wed May 28, 2014
TB is growing increasingly drug resistant -- and it's becoming a global problem.
Ebola: Time for experimental vaccines?
updated 3:48 PM EDT, Fri August 22, 2014
Nearly 40 years after Ebola was discovered, there is no cure. But could experimental vaccines protect people?
Hunting down 'fiery serpent' disease
updated 6:27 AM EDT, Fri May 9, 2014
Guinea worm disease once infected millions -- now it's almost eradicated. But can we catch the final cases?
Artificial eyes, plastic skulls
updated 11:44 AM EDT, Thu April 17, 2014
Scientists are bioprinting human body parts from ears to bones. Here are some the most impressive advances.
Man loses fingers, prints new ones
updated 4:40 AM EST, Tue December 30, 2014
A South African carpenter lost his fingers in an accident -- now he's making mechanical fingers and hands for others.
Meet grandma's robot buddy
updated 5:32 AM EDT, Fri May 16, 2014
Robot carers are helping elderly people, watching their health and keeping them company.
From toilet to tap: Drinking waste water
updated 10:46 AM EDT, Thu May 1, 2014
Half the world is facing water shortages, so is it time for us all to start drinking recycled sewage?
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Vital Signs is a monthly program bringing viewers health stories from around the world.
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