World's local governments rally in California to fight climate change
The gathering reflects a desire to bypass the slow progress of national governments in implementing Paris agreement goals
Ten things to know about world hunger
Globally 821 million people, or one in nine, do not have enough food to eat
Poland must speed up fight against smog - report
Cities in Poland, especially in the south, sometimes have denser smog than New Delhi or Beijing
UK 'failing' to save thousands of children from modern slavery
More than 2,000 children suspected to have been trafficked were referred to the government last year - the highest annual number on record
Water shortages to cut Iraq's irrigated wheat area by half
Drought, water shortages have reduced Nineveh, Iraq's former breadbasket, to a dust bowl
Disaster-prone Asia must not cut corners on critical infrastructure
Damage to critical infrastructure is escalating the global cost of extreme weather, earthquakes and tsunamis
World hunger levels rise for third year running - U.N.
Hunger appears to be increasing in almost all of Africa and in South America, with 821 million people - one in nine - going hungry in 2017
The twin crises no one can avoid—or allow to continue
The same economic forces that worsen climate change also deepen inequality for poor and rural communities
'Bring in the angel of death': Kenyan elders issue curse to fight land loss
"What we've decided is to go to our god by cursing them. That is our court"
California governor commits to 100 pct clean energy
Hawaii is the only other U.S. state to set a similar goal