About 1 million people are living with multiple sclerosis in the U.S., and about 10% of those have PPMS, making it the least common form of the disease.

Red Bull are "the benchmark" in Formula 1 as pre-season testing begins in earnest in Bahrain, says Mercedes team boss Toto ...

SAKHIR, Bahrain (AP) — Formula 1 testing began in Bahrain on Wednesday as preparations for the new season gather pace. Teams will be given around eight hours of track time as drivers get to grips with ...

Lewis Hamilton says that "none of the fans are going to understand" some of the new rules introduced into F1 this year.

Reaction and analysis as Maro Itoje returns to England's starting XV for Saturday's Six Nations game against Scotland.