In this episode:
To protect themselves against viral infection, bacteria often use CRISPR-Cas systems to identify and destroy an invading virus’s genetic material. But viruses aren’t helpless and can deploy countermeasures, known as anti-CRISPRs, to neutralise host defences. This week, a team describe a new kind of anti-CRISPR system, based on RNA, which protects viruses by mimicking part of the CRISPR-Cas system. The researchers hope that this discovery could have future biotechnology applications, including making CRISPR-Cas genome editing more precise.
Research article: Camara-Wilpert et al.
Carved inscriptions suggest a queen named Thyra was the most powerful person in Viking-age Denmark, and the discovery of a puffed-up exoplanet that has just 1.5% the density of Earth.
Research Highlight: Runes on Viking stones speak to an ancient queen’s power
Research Highlight: ‘Super-puff’ planet is one of the fluffiest worlds ever found
Climate-change induced melting of Greenland’s vast ice sheet would contribute to 7m of sea level rise. But it has been difficult to calculate how the ice sheet will respond to future warming. This week, a team suggest that abrupt ice loss is likely if the global mean temperature is between 1.7 °C and 2.3 °C above pre-industrial levels. Keeping temperature rise below 1.5 °C could mitigate ice loss, if done within a few centuries, but even a short overshoot of the estimated threshold could lead to several metres of sea-level rise.
Research article: Bochow et al.
A massive reproducibility exercise reveals over 200 ecologists get wildly-diverging results from the same data, and how melting simulated lunar-dust with lasers could help pave the Moon.
Nature News: Reproducibility trial: 246 biologists get different results from same data sets
Nature News: How to build Moon roads using focused beams of sunlight
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Coronapod: COVID and diabetes, what the science says
How virtual meetings can limit creative ideas
Audio long-read: The quest to prevent MS — and understand other post-viral diseases
We could still limit global warming to just 2˚C — but there's an 'if'
Coronapod: Infected immune cells hint at cause of severe COVID
Why do naked mole rats live as long as giraffes?
Five years in the coldest fridge in the known Universe
Audio long-read: A more-inclusive genome project aims to capture all of human diversity
Winding roads could make you a better navigator
Milky Way's origin story revealed by 250,000 stars
Coronapod: How vaccine complacency is plaguing 'COVID zero' strategies
The coin toss of Alzheimer's inheritance
The vest that can hear your heartbeat
The AI that deciphers ancient Greek graffiti
Coronapod: why stopping COVID testing would be a mistake
COVID stimulus spending failed to deliver on climate promises
Audio long-read: The race to save the Internet from quantum hackers
Dinosaur-destroying asteroid struck in spring
Tongan volcano eruption leaves scientists with unanswered questions
Coronapod: How African scientists are copying Moderna's COVID vaccine
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