@BBCMarkMardell via Twitter
Daddy can't build a snowman - one survivor's story a year after the Boston bombing http://t.co/Prw6lSc53Y
US President Barack Obama tells Japan that islands it disputes with China are covered by a bilateral defence treaty, as he begins an Asian tour.
Clothing retailer Primark is to open its first US stores, beginning with a 70,000 sq-ft shop in Boston.
US President Barack Obama and first lady Michelle Obama have written a letter to the friends and family of the late musician. Newsbeat
Obama's visit to Asia 'reassures US allies'
How can the human body endure clinging to a plane wheel?
Isaac Asimov's predictions, 50 years on
Felicia Day writes her own Hollywood rules
The man who takes wayward children to therapy camp
Group prepares autistic workers for tech jobs
Duo remember Boston Marathon as they return to run again
The story of Joseph Heller's 'forgotten' Catch-22 theatre script
The battle for exclusive online TV shows
Catch-up on this breathtaking documentary that explores nature and its response to the sun
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