Researchers then conducted functional Magnetic Resonance Imaging scans on the dogs while their owners stood in front of the machine calling out the name of each object while showing the corresponding toy. The owners also called out meaningless words while displaying random objects. The fMRI results showed increased activation in auditory regions of the dogs' brains to the unassigned words compared to the trained words.

The White House has indicated that he intends to cover a "full range of pressing issues" with his Russian counterpart, including arms control, climate change, Russian military involvement in Ukraine, Russia's cyber-hacking activities and the jailing of Russian dissident Alexei Navalny.

The Com-Cov study launched in February to see whether a different jab for the second dose might give longer-lasting immunity, better protection against new variants or simply allow clinics to swap vaccines if supplies are interrupted.

The latest government data - based on evidence from the UK rollout - suggests one dose of the Pfizer-BioNTech or Oxford-AstraZeneca vaccine cuts the risk of infection by as much as 70%, and serious illness and death by even more.

Videos of people sticking magnets to their arms where they claim they’ve had the Covid vaccine have gone viral. We debunk this so-called magnet challenge.