By Layal Liverpool
A former police officer whose wife died five weeks after bowel surgery said he was "knocked sideways completely" when he received an anonymous letter
Uncle Sam has a message for sluggish Americans: Get moving now.
More than 15% of American adults are physically inactive, a new U.S. Centers for
Mosquitoes that can't be infected by or spread dengue virus have been created by scientists.
The researchers genetically engineered the mosquitoes to be resistant to