Science and Technology (old posts, page 209)

The Covid ‘lab leak’ theory isn’t just a rightwing conspiracy – pretending that’s the case is bad for science | Jane Qiu

While figures like Steve Bannon have exploited the issue, scientists have done themselves no favours by shutting down legitimate inquiry

More than five years after the Covid-19 pandemic was declared, its origins remain a subject of intense – and often acrimonious – debate among scientists and the wider public. There are two broad, competing theories. The natural-origins hypotheses suggest the pandemic began when a close relative of Sars-CoV-2 jumped from a wild animal to a human through the wildlife trade. In contrast, proponents of lab-leak theories argue that the virus emerged when Chinese scientists became infected through research-associated activities.

A perplexing aspect of the controversy is that prominent scientists continue to publish studies in leading scientific journals that they say provide compelling evidence for the natural-origins hypotheses. Yet rather than resolving the issue, each new piece of evidence seems to widen the divide further.

Jane Qiu is an award-winning independent science writer in Beijing. The reporting was supported by a grant from the Pulitzer Center

Do you have an opinion on the issues raised in this article? If you would like to submit a response of up to 300 words by email to be considered for publication in our letters section, please click here.

Continue reading...

Dogs pulling on leads cause large number of hand and wrist injuries in UK, study shows

Women and older adults most likely to suffer dog walking injuries such as finger and wrist fractures, research says

Walking your dog may be good for you and your canine companion, but research shows it can also be dangerous.

While the health benefits are numerous – encouraging increased activity levels and physical exercise, improving cardiovascular health and weight – researchers found that being pulled on the lead increases the risk of falls and injuries.

Continue reading...

Red-letter day as gemologists discover why crimson diamonds are so rare

The Winston Red, one of only 24 red diamonds of more than one carat publicly recorded, is on display in Washington DC

Red diamonds are some of the rarest gems on the planet: only 24 stones of more than one carat (200 milligrams) have been publicly recorded.

Now, one of the finest red diamonds – the Winston Red – has gone on public display at the Smithsonian National Museum of Natural History in Washington DC.

Continue reading...