The 25th anniversary of the world wide web will be celebrated around the globe this week. The milestone will be marked on Wednesday, a quarter of a century since it was first proposed in 1989 by British computer scientist Tim Berners-Lee.

The 25th anniversary of the world wide web will be celebrated around the globe this week.

The largest scientific meeting of its kind in Europe gets underway in Dublin this evening.

Scientists switched on the world’s largest atom smasher for the first time since the $10bn (€6.7bn) machine suffered a spectacular failure more than a year ago.