Photo of the Day
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Mystery rocks
These blue, spherical rocks have fascinated scientists. Where were they found?
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The real black panther
This stunning photograph of a black leopard was taken by Will Burrard-Lucas at the Laikipia Wilderness Camp in Kenya. What makes it so special?
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Introducing Ai-Da
This is Ai-Da, a humanoid robot named after the 19th century computer programmer, Ada Lovelace. She is being described as the world’s first robot… what?
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Stairway to heaven
These ladders have been hung up in Salisbury Cathedral. What important event is the exhibition responding to?
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Ivanka vacuuming
“Women can choose to knock each other down or build each other up. I choose the latter,” tweeted Ivanka Trump in response to this image. What is it?
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Women in white
These women made the news with their unexpected cheering. What were they watching at the time?
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Happy New Year!
Yesterday, 20% of the world’s population celebrated the start of Chinese New Year. The Year of the Pig is beginning. It is the last year in the cycle — but which is the first?
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1,000-yard stare
This iconic photo was taken by Don McCullin, whose work is now on show in London. But in which country was the photo shot?
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Frozen pants challenge
People in America’s midwest, where temperatures have fallen to -35C, have been doing the frozen pants challenge. The polar vortex may be cold, but it is warm compared to the coldest temperature...
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Three diamonds in the sky
This photo, by Petr Horálek, has won the Royal Society’s publishing photography competition. What does it show?
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Off to Brrr-ussels!
This scarf worn by Prime Minister Theresa May this week has symbolic meaning. What does it represent?
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Snow big deal
The UK is braced for snowfall all this week, and it is already disrupting roads and schools in some parts of the country. What is the deepest snow ever recorded in the UK?
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A bridge too far
This bridge in Shanghai has been in the news. Why?
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The stolen Banksy
This artwork by the street artist Banksy was stolen over the weekend. Where was it painted?
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Backpack protest
Eight hundred backpacks were arranged on the steps of St Paul’s Cathedral. What do they represent?