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Why do we feel regret – is it right to live with it, or should we get over our mistakes?
One night of terror at Dhaka's Holey Artisan Bakery in July 2016
Obama is the first US president to author an article in Science magazine.
From revolutionary to regime critic: the two lives of former Iranian president Rafsanjani
In the countries where it’s legal, why do people choose to bear arms?
The women and men protesting against attempts to ban all abortions in Poland
Hate crimes against Muslims are on the rise. One woman is fighting back. Literally.
Jihadis, bikers and Moscow gangs: BBC Arabic investigates contract killings in Turkey
Why do some people take the law into their own hands?
There’s a crisis of homelessness in Britain