Tyrannosaurus rex may have been three different species

This picture taken on June 8, 2013 shows the 70-million-year-old Tyrannosaurus bataar, which was recently returned by the United States, goes on display in Ulan Bator.A Florida fossils dealer — (Image credit: 2013 AFP)

The tyrannosaurus rex may have been three different species, according to experts studying remains thought to have belonged to one of the dinosaurs. Variations between different T-rex remains suggest the existence of a stout dinosaur with two incisor teeth, named Tyrannosaurus imperator by the researchers, as well as a third, more slender T-rex called Tyrannosaurus regina. Gregory Paul, a dinosaur specialist on the film Jurassic Park and the lead author of the research, said it would be decades before there were enough museum specimens to do a statistical analysis, The Guardian reported.

Nostalgia is a painkiller

A study has found that nostalgia can act as a painkiller, reported The Times. Researchers at the Chinese Academy of Sciences found there to be a relationship between fond memories and the areas of the brain which perceive and register pain. They studied 34 young people with an average age of 21, showing them images associated with childhood. They then used magnetic resonance imaging to assess their brain activity while a source of pain was applied. The results showed that “nostalgia significantly reduced pain ratings”.

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Hairdresser shares key gripes

A hairdresser named Amylee has turned to TikTok to reveal the most irritating situations she faces in her work. Amylee said she hates it when clients “roll in 20 minutes late” or when they suddenly ask to change their hair colour halfway through a dying session because they have changed their minds. She added that she also finds it annoying when customers tell her “my husband loves my long hair so don't take off any length – but get rid of the dead stuff”, reported the Daily Mirror.