What happened
Counter-terrorism officers are now supporting the investigation into a car attack that left seven people seriously injured in Derby as police work to establish a motive. The incident, which took place on Friar Gate during a busy night out, saw pedestrians struck by a vehicle, prompting a major emergency response. The suspect, a 36-year-old man, was detained within minutes elsewhere in the city after witnesses had alerted officers to the car’s movements.

Who said what
Chief Superintendent Emma Aldred said: “At 9.30pm last night, seven people were injured in the streets of Derby in a horrific incident that has understandably shocked our city.” She emphasised: “This does not mean the incident is currently being treated as terrorism.”

Derby “is a city, but in many ways feels like a big town due to its community spirit”, said Sonia Kataria and Steve Beech on the BBC. There was a “real sense of shock from people walking past the scene, a feeling that this sort of thing does not happen around here”.

What next?
Police say inquiries remain at an early stage, with detectives continuing to question the suspect and examine evidence to determine intent.

What happened
Broadcasters and advertisers are adjusting to sweeping restrictions on junk food marketing, with the new rules shaping how Easter is promoted on television. Regulations introduced this year prevent products high in fat, sugar and salt from being advertised before 9pm, removing many familiar seasonal campaigns from daytime viewing. The impact has already been felt across the industry, with ad spend by confectionery and snack brands dropping sharply in recent months.

Who said what
The UK will have its “first Easter without the traditional barrage of TV ads for chocolate eggs and hot cross buns”, said Mark Sweney in The Guardian.

However, campaigners say food companies are offsetting the ad ban, which also covers paid online spots, by shifting their spending into less restricted channels such as billboards and radio. Fran Bernhardt, of the campaign group Sustain, argued: “The policy is riddled with loopholes that allow the industry to continue to advertise branding for unhealthy products.”

What next?
A further tightening of the rules is already under consideration, with a consultation launched on expanding the list of restricted foods.

“When you come for the king, you best not miss,” said New Scientist – “particularly if the king in question” is Tyrannosaurus rex, a nine-tonne dinosaur with “the biggest teeth of any known land predator in history”.

Researchers have found that, far from being a “one-species monopoly” under T. rex, the dinosaur “landscape” may have “hosted a tiered guild of hunters”, said Scientific American, including one of the most hotly contested dinosaur species: the Nanotyrannus.

Tyrannosaurus rex has quite a fan base. It was the “tyrant lizard king” and has “developed tremendous loyalty”, said Greg Paul, a dinosaur researcher. “There’s even a rock band named for the animal.”

For decades palaeontologists have argued whether the single skull used to define the Nanotyrannus represented a true species in its own right or whether it was merely a young T. rex.

But a study in the journal Science argues that this thorny question has finally been resolved: Nanotyrannus was nearly fully grown and not a juvenile T. rex.

Now that the researchers behind the new study have “corrected the record on Nanotyrannus”, according to co-author James G. Napoli, a palaeontologist at Stony Brook University in New York, they think it’s “possible that other smaller tyrannosaur fossils are misidentified”, so there may be “many more species awaiting recognition”.

It is not often that “opinions on a high-profile dinosaur change so rapidly and so dramatically”, added New Scientist. This latest shift has “profound implications” because it means that we “may need to completely rethink the way that dinosaur ecosystems were organised” and “how and why the dinosaur-dominated world came crashing down”.