Science Weekly
Alok Jha and the Guardian's science team bring you the best analysis and interviews from the worlds of science and technology.
Does China need to rethink its zero-Covid policy?
To slow down a surge in Covid cases, last week Chinese authorities put Shanghai into lockdown. But with a population of 26 million there have been difficulties providing residents with basic necessities, and videos have appeared on social media showing protests and scrambles over food supplies. Now, authorities plan to…
Why are climate and conservation scientists taking to the streets?
Last week’s IPCC report gives the world just 30 months to get greenhouse gas emissions falling. Beyond that, we’ll have missed our chance of limiting global heating to 1.5C and protecting our planet from the most serious impacts of climate change. As the window closes, some scientists feel like writing…
Why has the UK (finally) expanded its Covid symptoms list?
This week, the UK expanded its official Covid symptom list to 12 symptoms including sore throat, loss of appetite, and a blocked or runny nose. British scientists have long called for a broadening of the list, but the change comes at a time when free rapid tests have been scrapped,…
Why is England keeping the abortion ‘pills by post’ scheme?
At the start of the Covid-19 pandemic, Great Britain brought in emergency legal orders to allow a ‘pills by post’ abortion service. For abortions within the first 10 weeks, women were able to take the two tablets needed to end a pregnancy in the privacy of their own home rather…
Can the science of PTSD help soldiers in Ukraine?
The war in Ukraine, like other conflicts around the world, will mean millions of people going through horrific and traumatic events. Some may go on to develop post-traumatic stress disorder, or PTSD, experiencing psychological distress for months or even years afterwards. Ian Sample speaks to clinical psychologist Jennifer Wild about…
COP15: is 2022 the year we save biodiversity?
As human activities like agricultural production, mining and pollution continue to drive the so-called sixth mass extinction, government negotiators from around the world are currently meeting in Geneva to try to protect the planet’s biodiversity. At stake is an ambitious Paris-style agreement for nature, the final version of which will…
Two years on, what have we learned about lockdowns?
Over the past two years, countries around the world have shut down their societies in last-ditch efforts to contain the pandemic. Some, like China, have enforced strict lockdowns as part of a zero Covid strategy. Others have ordered people to stay at home to flatten the curve of infections and…
As the energy crisis bites, could fracking ever actually work?
The average family’s energy bill will soon be increasing by 54% in the UK, amid soaring energy prices caused in part by Covid-19 lockdowns and Vladimir Putin’s decision to reduce gas exports prior to Russia’s invasion of Ukraine. In response, the UK government is considering all its options to secure…
Covid cases are rising again – how worried should we be?
After falling for the past few weeks, the number of Covid cases in the UK is increasing once more. Since the easing of restrictions, scientists have been expecting an upwards trend in infections – but could other factors also be at work? Guardian science correspondent Nicola Davis speaks to Anand…
10% of the world’s wheat comes from Ukraine - will war change that?
As the world watches oil and gas prices soar – the next big shock could hit the dinner table. Collectively, Russia and Ukraine are responsible for more than a quarter of global wheat exports and for around 80% of the world’s supply of sunflower oil. Russia — along with ally,…
How come some people haven’t had Covid yet?
Although several countries around the world continue to have high rates of Covid-19 infections, including the UK and US, many of their citizens are yet to be infected with the Sars-Cov-2 virus. This includes countless individuals who have knowingly been exposed, often multiple times, but have still never had a…
Is Russia losing the information war?
Since Vladimir Putin’s bizarre televised address announcing a ‘military operation’, the Russia-Ukraine war has been rife with disinformation and propaganda. Last week, Facebook and Instagram blocked access to the Russian state media outlets RT and Sputnik across the European Union. In retaliation, Russia completely blocked access to Facebook and restricted…
What have fossil fuels got to do with the invasion of Ukraine?
As Russia continues its invasion of Ukraine, gas prices remain high around the world. Europe is dependent on Russia for about 40% of its natural gas supplies, and despite the expansion of renewable energy over the past two decades, that dependency is increasing as countries shift to gas from dirtier…
Act now: understanding the latest warnings in the IPCC report
A new report from the Intergovernmental Panel on Climate Change (IPCC) has given humanity a stark warning: without immediate and rapid action on climate breakdown, a liveable and sustainable future for all is at risk. The assessment, which is based on 34,000 studies, documents the ‘widespread and pervasive’ impacts on…
Covid-19: what’s the evidence for vaccinating kids?
When the announcement came last week that all children aged five to 11 in England will be offered a Covid vaccine, emphasis was placed on parental decision-making. But with factors to consider including disease severity, transmission, long Covid and vaccine side-effects, for many parents and guardians this may not be…
Will storms like Eunice become the norm?
Over the past week, the UK has been hit with three storms: Dudley, Eunice and Franklin. With high winds and heavy rain, they have brought death and injury, caused extensive damage to trees and infrastructure and stopped transport across the country. Madeleine Finlay speaks to Dr Fredi Otto about how…
Will Silicon Valley help us live to 200 and beyond?
While Benjamin Franklin’s famous quote about death and taxes remains true for most, the same might not be said for some of the world’s billionaires. And their efforts to extend life are under way. Most recently, a Silicon Valley start-up called Altos Labs signed up a dream team of scientists,…
What will ‘living with Covid’ actually mean?
Last week Boris Johnson announced that all Covid regulations in England, including the requirement to isolate after testing positive, were due to be abolished on 24 February. Whilst the Omicron variant has caused fewer hospitalisations and deaths than many predicted, some scientists say the changes may be going too far,…
Why does Elon Musk want to read your mind?
A few weeks ago, Elon Musk’s company Neuralink posted a job advert recruiting for a ‘clinical trial director’ to run tests of their brain-computer interface technology in humans. Neuralink’s initial aim is to implant chips in the brain that would allow people with severe spinal cord injuries to walk again…
How worried should we be about the new Omicron subvariant?
Late in November, the World Health Organization designated the Covid variant B.1.1.529, with its many mutations, as a variant of concern. Dubbed Omicron, within weeks it had rapidly spread across the globe and become the dominant variant. But not far behind has been its even more transmissible cousin, BA.2. Initially…