The Ice Bucket Challenge of two summers ago did more than deliver a chilly thrill to millions of people.
The money it raised has led to an important breakthrough in ALS research.
Scientists at the University of Massachusetts Medical School have discovered a new gene that's responsible for the disease.
Genetic testing in over 1,000 ALS families showed 3 percent of patients had a variation of the gene that supplies neurons and repairs DNA.
Experts say that the Internet sensation may have seemed silly at the time, it raised more than $220 million in eight weeks.
