Regulations come into force at midnight tonight, which allow the British Library to begin archiving the entire UK web domain.
Billions of webpages, blogs and e-books will also be preserved in order to document the digital age.
The library could eventually collect copies of every public Tweet or Facebook page in the British web domain.
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On Monday a young man from Wembley was reported missing by family who suspected he was travelling to Syria. Police were too slow, says MP.
The ArcelorMittal Orbit, designed by Anish Kapoor, is the UK tallest sculpture and will soon be the world's tallest slide.
Lambeth council is believed to be the first in the UK to take action against the use of nitrous oxide as a stimulant.