U2 will this week support the first global awareness campaign to spotlight multiple sclerosis (MS).

World MS Day, on Wednesday, will involve more than 160 events in 51 countries.

U2 have contributed their song Beautiful Day, which will feature on a global campaign film highlighting different aspects of MS. Meanwhile, eight people will climb six of Ireland's mountains in 72 hours.

The aim is to highlight the plight of people with the disease, raise money for patient charities and research funding, forge links between MS organizations, and urge action from politicians.