Inequality index: where are the world’s most unequal countries?

Inequality isn’t all about income. Here’s a guide to different ranking systems – from wealth distribution to the World Happiness Report – and which countries rate best and worst under each

Serena Williams’s pregnant victory reminds us how amazing women’s bodies are

The tennis star triumphed at the Australian Open without dropping a set while in her first trimester. Are women the weaker sex? I don’t think so

Step aside Denmark. Norway takes world’s happiest nation crown

Knocking their Scandi neighbours off the top of the happiness index, Norwegians put their joyful outlook down to shared experiences, the great outdoors – and lots of country cabins

Sale of Cambodian breast milk to mothers in US criticised by UN

UN agency says trade puts women’s babies at risk of malnutrition as Cambodia moves to block further exports

‘As countries go it really is the golden ticket’: readers on living in Norway

Norway recently overtook Denmark as the happiest country to live in according to World Happiness Report. But what are the reasons for people’s happiness there?

Come on, this is Britain – we don’t like to be too happy

The country came 19th in the new World Happiness Report. That’s about right. Any higher and we might have been embarrassed

What makes Norway the world’s happiest country?

If you live in Norway we’d like to know why you think it’s considered the happiest country in the world

‘All my friends had some nightmare experience trying to get pregnant. My story took the cake’

At five months pregnant, Ariel Levy lost her baby. After four more years of IVF, had she left motherhood too late?

Can high-intensity interval training delay the ageing process?

Researchers have found that short-burst exercise might have rejuvenating effects – but there can be such a thing as too much intensity

Leaders launch fund to counter Trump’s ‘gag rule’, and huge cuts to US aid likely

Nations pledge millions to mitigate Trump’s block on funding to family planning services worldwide, and outline US budget indicates big fall in aid spending