The Great Wall of China took part in this year's Earth Hour. Everyone around the world is asked to turn off lights for an hour from 8.30pm local time as a show of support for tougher action to confront climate change.
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The pre-trial hearing for a British banker, accused of murdering two women in Hong Kong last November, was adjourned for five weeks.
Conservationists say one of the UK's most threatened butterflies has recorded its best year for a decade following 2014's warm spring.
The SNP leader Nicola Sturgeon says tonight's TV election debate shows there is a clear demand for a new style of politics across the UK.