内容摘要："Anytime you're building that much of a transformational technology, its important to think about those controls and guardrails so that it can go towards the betterment of society not the detriment.

"Anytime you're building that much of a transformational technology, its important to think about those controls and guardrails so that it can go towards the betterment of society not the detriment.

Two hours drive away, we reach the Deadfall Hills. Getting there involves a hike through dense forest, wading - or doggy-paddling in the case of Aster - across a fast-running river, and clambering over slippery rocks.No digging is required here; super-sized bones lie next to the shoreline, washed out from the rock and cleaned by the flowing water, just waiting to be picked up.

A huge vertebra is quickly spotted, as are bits of ribs and teeth scattered across the mud.Palaeontologist Jackson Sweder is particularly interested in what looks like a chunk of dinosaur skull. "Most of what we find here is a duck-billed dinosaur called Edmontosaurus. If this is a skull bone, this is a dinosaur that's large - probably 30ft (10m) long," he says.The Edmontosaurus, another herbivore, roamed the forests like the Pachyrhinosaurus - and is helping palaeontologists build up a picture of this ancient land.

Sweder is the collection manager at the Philip J Currie Dinosaur Museum in nearby Grande Prairie, where the bones from both of these giants are taken to be cleaned up and analysed. He is currently working on a huge Pachyrhinosaurus skull that's about 1.5m long and has been nicknamed "Big Sam".He points to where the three horns should be at the top of the frill, but the one in the middle is missing. "All the skulls that are decently complete have a spike in that spot," he says. "But its nice little unicorn spike doesn't seem to be there."

Throughout years working at the extraordinary site, the museum team has collected 8,000 dinosaur bones, and the surfaces of the lab are covered in fossils; there are bones from Pachyrhinosaurus of every size, from young to old.

Having material from so many animals allows researchers to learn about dinosaur biology, answering questions about how the species grows and the make-up of the community. They can also look at individual variations, to see how one Pachyrhinosaurus could stand out from the herd – as may be the case with Big Sam and his missing spike.And in 2023, the National Eating Disorder Association replaced its live helpline with a chatbot, but later had to suspend it over claims the bot was recommending calorie restriction.

In April 2024 alone, nearly 426,000 mental health referrals were made in England - a rise of 40% in five years. An estimated one million people are also waiting to access mental health services, and private therapy can be prohibitively expensive (costs vary greatly, but the British Association for Counselling and Psychotherapy reports on average people spend £40 to £50 an hour).At the same time, AI has revolutionised healthcare in many ways, including helping to screen, diagnose and triage patients. There is a huge spectrum of chatbots, and about 30 local NHS services now use one called Wysa.

Experts express concerns about chatbots around potential biases and limitations, lack of safeguarding and the security of users' information. But some believe that if specialist human help is not easily available, chatbots can be a help. So with NHS mental health waitlists at record highs, are chatbots a possible solution?Character.ai and other bots such as Chat GPT are based on "large language models" of artificial intelligence. These are trained on vast amounts of data – whether that's websites, articles, books or blog posts - to predict the next word in a sequence. From here, they predict and generate human-like text and interactions.