People with rheumatoid arthritis often take medicines that can have damaging side-effects, but a system that uses red light to deliver drugs exactly where they are needed could help

The UK government will begin trials of its coronavirus contact-tracing app this week, but what impact it will have on slowing the spread of covid-19 is unclear

Our best mathematical theory of consciousness is sparking a rethink of one of science’s hardest problems – how simple matter gives rise to a complex mind

China just tested its biggest rocket yet, along with a new capsule designed to carry humans to its planned space station, the moon and beyond

We’ve found a 200-metre cliff in Mars's Hellas basin, the first evidence of a river that flowed on the planet for more than 100,000 years

Brain implants have revealed that we replay conscious experiences while we sleep, with the same patterns of neurons firing during sleep as in waking life

Telling Lies is a game where you sift through video calls to solve a mystery. Half the time you don't know what you should be doing, but that's part of the fun, says Jacob Aron

Once the coronavirus pandemic is over, we must work out how to stop the spread of poor information that has helped make a bad situation that much worse

Astronomers found a star that appeared to be orbiting nothing at all – but it’s actually the closest black hole ever at just 1000 light years away

Many countries are focusing coronavirus testing on people who have covid-19 symptoms. But regularly testing all essential workers would have more of an impact

Amid the global coronavirus outbreak, a second epidemic of preliminary, unverified and misinterpreted research has broken out. Can it be fixed?

With social media, newspapers and politicians all espousing unverified covid-19 findings, use these seven signs to tell if a study should be treated with caution

A small increase in water temperature near a Japanese nuclear power plant allowed tropical fish to colonise the area, suggesting global warming will drastically alter some marine ecosystems

A study of brain cells in a dish adds to growing evidence that Alzheimer’s disease can be caused by herpes viruses, but antiviral treatment may help stop it

The BCG tuberculosis vaccine boosts the production of immune cells and this may explain how it protects newborns from dying of sepsis

The leading hypothesis for how the moon formed involves a collision between a Mars-sized object and Earth that would have boiled away elements like carbon, making its discovery on the moon a mystery

Finland’s two-year test of universal basic income has concluded that it doesn't seem to disincentivise working, and improves recipients’ mental and financial well-being

Many ancient monuments are claimed to be aligned to celestial phenomena, but we now have the first statistical evidence this is the case for the Egyptian pyramids

Mercury is much denser than the other rocky planets in the solar system, and that may be because a collision vaporised its surface and the debris was blown away by the sun

People in lockdown are no longer trying to use technology to get their old lives back and that's a good thing, says Annalee Newitz

Mouse neurons trapped inside cages grow long appendages to connect to each other. Trapping the cells allows us to precisely control their growth

The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic

New Zealand is on track to eliminate covid-19 altogether, but keeping the virus out for good will be a challenge, and the economic impacts are likely to hurt

About 80 per cent of stars in the Milky Way’s central bulge have relatively close encounters with another star, which can fling off any planets orbiting them

Global warming has already made parts of the world – including cities in Pakistan and the United Arab Emirates – hotter than the human body can withstand