Boris Johnson will also visit the White House for the first time since Joe Biden became US President.

Premier Dan Andrews is to release Victoria’s roadmap out of lockdown a day after protests in Melbourne, Sydney, Byron Bay and Brisbane. Follow updates liveCovid vaccine rollout and rates tracker; Cases, trends and data trackerGet our free news app; Get our morning email briefing 12.53am BST If you’re still catching up on the latest twist in Christian Porter’s ongoing travails, my colleague...

The four amateur astronauts landed safely in the Atlantic Ocean after three days orbiting Earth.

The four-person crew thanked mission control as they splashed down in the AtlanticFour space tourists ended their trailblazing trip to orbit on Saturday with a splashdown in the Atlantic off the Florida coast.Their SpaceX capsule parachuted into the ocean just before sunset, not far from where their chartered flight began three days earlier. Continue...

Seaweed production has been affected by warming seas – this is how farmers are adapting.

After asking for public help with their investigations, scientists have received thousands of reports and specimens of dead, shrivelled frogsIn the middle of Sydney’s lockdown, scientist Jodi Rowley has been retrieving frozen dead frogs from her doorstep.Occasionally one will arrive dried and shrivelled up in the post. Continue...

It will be six months on Sunday that the volcanic eruption currently mesmerising spectators near Reykjavik first began, making it the longest Iceland has witnessed in more than 50 years.

England’s deputy medical chief asked for data to be withheld unless British vaccine guinea pigs allowed to travel abroad• Coronavirus – latest updates• See all our coronavirus coverageEngland’s deputy chief medical officer asked ministers to withhold all UK clinical trial data from the EU if European countries continued to deny entry to British vaccine trial volunteers, the Observer can...

Household names may have unwittingly helped spread fake news, investigation revealsDozens of the world’s biggest brands, including Nike, Amazon, Ted Baker and Asos, have been advertising on websites that spread Covid-19 misinformation and conspiracy theories, it has emerged. The companies, as well as an NHS service, are among a string of household names whose ads appear to have helped fund...

How I overcome my chronic insomnia with scienceEverything about our day impacts our sleep. How many minutes we spend outside, what and when we eat, what’s happening with our hormones, our habits, emotions, stress and thoughts – all this feeds into the sleep we end up with at night. All of which I was completely oblivious to when battling chronic insomnia for years on end.Sleep anxiety can...

Teachers targeted by anti-vaxxers as schools prepare to vaccinate pupilsSecondary schools in the UK have been plunged into the centre of the row over Covid vaccines for 12- to 15-year-olds, with anti-vaxxers at school gates and a headteacher threatened with legal action by one of his own governors.Letters circulated by campaign groups and parents are accusing schools of sanctioning “medical...

Plants regulate their growth using hormones, including a group called strigolactones that prevent excessive budding and branching. Strigolactones also help plant roots form symbiotic relationships with microorganisms that allow the plant to absorb nutrients from the soil. These two factors have led to agricultural interest in using strigolactones to control the growth of weeds and root parasites,...

Infants coming from homes with domestic violence often go on to have worse academic outcomes in school due to neurodevelopmental lags and a higher risk for a variety of health issues, including gastrointestinal distress, trouble eating and sleeping, as well as stress and illness.

The first space tourism mission by Elon Musk's SpaceX blasted off from Florida on Wednesday and the four crew members—a billionaire and three other Americans—have already seen more than 25 sunsets and sunrises.

Firefighters battling to protect the world's biggest tree from wildfires ravaging the parched United States said Friday they are optimistic it can be saved.

California wildfires have burned into at least four groves of gigantic ancient sequoias in national parks and forests, though cooler weather on Friday helped crews trying to keep the flames away from a famous cluster containing the world's largest tree.

Tom Cruise got a sneak preview of what it's like to circle Earth in a SpaceX capsule.

Plants regulate their growth and development using hormones, including a group called strigolactones that prevent excessive budding and branching. For the first time, scientists led by UC Riverside have synthesized strigolactones from microbes. The work is published in the open-access journal, Science Advances.

Rearing virus-resistant birds could benefit humans too, say scientists, and Covid may have made us more open to the controversial technologyDiseases such as avian flu trigger the culling of millions of birds each year. But that need not be the case for much longer.Vaccines are one preventive strategy employed in some countries, but they do not stop birds from being infected, getting mild versions...