Climate change is not only pushing species to the brink of extinction, it is erasing a vast proportion of the ‘evolutionary history’ of the world’s flowering plants’ — or how these organisms relate to one another on the tree of life, which changes over time. No less than a fifth (21 %) of the world’s...
Category: Science & Tech
Webb telescope captures weather on exoplanet 700 lightyears away
“Cloudy with a chance of rain” — imagine astronomers turning into meteorologists and issuing weather reports like this, but for alien planets. According to a new study published in Science on May 21, scientists were able to use the NASA James Webb Space Telescope (JWST) to peer closely at an exoplanet nearly 700 lightyears away,...
New Ebola outbreak shows how market failure delays vaccine research
The World Health Organization declared the Bundibugyo ebolavirus (BDBV) outbreak in the Democratic Republic of the Congo and Uganda to be a public health emergency of international concern on May 17. The outbreak exposes a critical gap in international vaccine preparedness. There is no licensed vaccine yet for the Bundibugyo species of the ebolavirus because...
Beat the heat: How to prevent Heatstroke
Heatstroke is an important condition to know about that can happen when your body overheats and can’t cool down. Also Read | Is heatwave really a wave of heat? What is heatstroke Heatstroke occurs when the body overheats to an extreme level, leading to a malfunction in its cooling system. Unlike heat exhaustion, which is...
How is the earth’s outer core changing?
A: The earth’s outer core is a voluminous liquid layer that lies around 2,800 km beneath the surface. This hot, churning sea is filled with molten iron and nickel. As the outer core moves constantly, it acts like a large generator, creating the planet’s magnetic field, which shields the earth from harmful solar radiation. Researchers...
Whole body scans: why investors love them but doctors hate them
When doctors express scepticism about whole-body scanning, a predictable counter-argument surfaces on social media within hours. Physicians, the theory goes, have a vested interest in keeping you undiagnosed. Healthy patients don’t fill hospital beds. Early detection threatens the treatment economy and the doctor is the last person you should trust to tell you whether to...
Dog brains shrank significantly by 5,000 years ago, thanks to humans
Domestic dogs have significantly smaller brains than their wolf ancestors. Researchers have long known that dogs’ brains shrank in the past, but when has been a mystery. Some theories also argue that strict aesthetic standards and intensive, selective modern breeding over the last 200 years could have been the cause. In a new study, researchers...
We’ve seen matter become light. What about the other way?
Matter can become energy. You might have seen this in the film Oppenheimer or in videos of nuclear explosions. Just as the nuclei fuse, a blinding light fills the air and sky, so bright that simply closing your eyelids does not help. Physics allows physicists to do the opposite as well: to create matter from...
How physicists are finding new ways to make electrons act strangely
For most of the last two centuries, we have not had to think much about electricity. At the start of this period, we were just beginning to understand what it was. And towards the end, climate change and renewable energy has rendered it a constant thought in our minds. But for many decades in between,...
Long-awaited anti-COVID drug is also a milestone against future viruses
The recent success of Ensitrelvir at preventing COVID-19 is a milestone in a drug quest that began with a singular development at the start of the pandemic. In January 2020, the full-length genome sequence of a strain of the SARS-CoV-2 virus was posted on an online discussion forum for virologists. The sequence revealed that SARS-CoV-2,...
