内容摘要：But the guard holding his clothes never knew the secret journal had been slipped inside.

But the guard holding his clothes never knew the secret journal had been slipped inside.

Whatever lies ahead, it will not be peace.Hidden beneath the slopes of a lush forest in Alberta, Canada, is a mass grave on a monumental scale.

Thousands of dinosaurs were buried here, killed in an instant on a day of utter devastation.Now, a group of palaeontologists have come to Pipestone Creek - appropriately nicknamed the "River of Death" - to help solve a 72-million-year-old enigma: how did they die?Trying to work out exactly what happened here starts with the hefty strike of a sledgehammer.

Brute force is needed to crack open the thick layer of rock that covers what Professor Emily Bamforth, who's leading the dig, describes as "palaeo gold".As her team begins the more delicate job of removing the layers of dirt and dust, a jumble of fossilised bones slowly begins to emerge.

"That big blob of bone right there is, we think, part of a hip," Prof Bamforth says, watched on by her dog Aster - whose job today is to bark if she spots any nearby bears.

"Then here, we have all of these long, skinny bones. These are all ribs. And this is a neat one - it's part of a toe bone. This one here, we have no idea what it is - it's a great example of a Pipestone Creek mystery."Medina's project explores female prison spaces across Chile, and the dynamics that shape the lives of incarcerated women and their families.

For the 2025 Youth competition, photographers aged 19 and under were invited to respond to an Open Call and enter their best images from the last year.The winner, chosen from a shortlist of 11 photographers, was Daniel Dian-Ji Wu, Taiwan, 16 years old, for his image of a skateboarder doing a trick, silhouetted against a sunset in Venice Beach, Los Angeles.

The prestigious Outstanding Contribution to Photography 2025 was awarded to acclaimed documentary photographer Susan Meiselas.For more than five decades, photographer Susan Meiselas has focused her lens on capturing compelling stories from diverse communities.