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: How has COVID impacted mental health?
What’s the best diet for people and the planet?
Audio long-read: The chase for fusion energy
Coronapod: everything we know about the new COVID variant
Researcher careers under the microscope: salary satisfaction and COVID impacts
Sea squirts teach new lessons in evolution
Coronapod: new hope from COVID antiviral drugs
The past and future of the Earth's climate
Audio long-read: How dangerous is Africa’s explosive Lake Kivu?
Podcast special: onboard the climate train to COP26
China’s COVID vaccines have been crucial — now immunity is waning
Genomics unwraps mystery of the Tarim mummies
Coronapod: can scientists harness COVID super-immunity?
Viking presence in the Americas pinpointed by ancient solar storm
Coronapod: the COVID scientists facing violent threats
How electric acupuncture zaps inflammation in mice
Coronapod: new data affirms the benefits of air filters and masks
The AI that accurately predicts the chances of rain
Starting up in science: behind the scenes
Starting up in science: Episode 4
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