People in cities experienced cleaner air during lockdowns, but a permanent shift to greener modes of transport and habits is ‘extremely complex to achieve’ given how much space is devoted to cars and the groups resisting change, says Dr Basile Chaix, who studies the health trade-offs we make as we travel.
In our continuing search for other life in the universe, one place has always looked promising – Mars. It is a rocky planet like Earth, orbiting the same star, and at a distance where water could have been present on the planet.
A small glimmer of light passes from one bacterium to another. Under the microscope it might not look like much, but there’s a deadly battle underway: the second cell has just been hit by a poisoned spear.
To begin with, it was just anecdotal reports. Ear, nose and throat specialists from around the world were sharing their experiences on online message boards – they were all seeing a spike in patients experiencing anosmia, a loss of smell.
Some people’s immune systems contain pre-existing protection against coronavirus, indicating that they have encountered a similar infection to Covid-19 before, according to Dr Aleksandra Walczak, a physicist at École Normale Supérieure in Paris, France.
Tracking the brain’s reaction to virtual-reality-simulated threats such as falling rocks and an under-researched fear reduction strategy may provide better ways of treating anxiety disorders and preventing relapses.
We are seeing a failure of global health governance in response to Covid-19 because there are too many agencies with different interests, according Professor Colin McInnes, pro-vice chancellor at Aberystwyth University in Wales, UK, who says global institutions such as the World Health Organization and World Bank should stand together in crises.
Preserving biodiversity is one of the key debates of our time – but another subject of hot debate in recent decades among evolutionary experts is how biodiversity has changed over the past few hundred million years. New findings are challenging the conventional view on this.
Transfusing antibodies from Covid-19 survivors into seriously ill patients could provide a quick treatment win, but a more selective approach may both treat and prevent the disease. A single, highly-effective antibody that is mass-produced like a drug could combine the benefits of antivirals and a vaccine for at-risk individuals such as health workers.
A recording of a cough, the noise of a person’s breathing or even the sound of their voice could be used to help diagnose patients with Covid-19 in the future, according to Professor Cecilia Mascolo, an expert in mobile health at data analysis at the University of Cambridge, UK.
Everyday urban spaces can help heat and cool our homes.
The red planet may be our best bet for finding out whether we’re alone in the universe.
Dr Basile Chaix says mobility changes are 'extremely complex' to achieve.