In this episode:
Researchers at Google Deepmind have developed an AI that can solve International Mathematical Olympiad-level geometry problems, something previous AIs have struggled with. They provided the system with a huge number of random mathematical theorems and proofs, which it used to approximate general rules of geometry. The AI then applied these rules to solve the Olympiad problems and show its workings for humans to check. The researchers hope their system shows that it is possible for AIs to ‘learn’ basic principles from large amounts of data and use them to tackle complex logical challenges, which could prove useful in fields outside mathematics.
Research article: Trinh et al.
A stiff and squishy ‘hydrospongel’ — part sponge, part hydrogel — that could find use in soft robotics, and how the spread of rice paddies in sub-Saharan Africa helps to drive up atmospheric methane levels.
Research Highlight: Stiff gel as squishable as a sponge takes its cue from cartilage
Research Highlight: A bounty of rice comes at a price: soaring methane emissions
Mass Mortality Events, sometimes called mass die-offs, can result in huge numbers of a single species perishing in a short period of time. But there’s not a huge amount known about the effects that events like these might be having on wider ecosystems. Now, a team of researchers have built a model ecosystem to observe the impact of mass die-offs on the delicate balance of populations within it.
Research article: Tye et al.
An update on efforts to remove the stuck screws on OSIRIS-REx’s sample container, the ancient, fossilized skin that was preserved in petroleum, and a radical suggestion to save the Caribbean’s coral reefs.
OSIRIS-REx Mission Blog: NASA’s OSIRIS-REx Team Clears Hurdle to Access Remaining Bennu Sample
Nature News: This is the oldest fossilized reptile skin ever found — it pre-dates the dinosaurs
Nature News: Can foreign coral save a dying reef? Radical idea sparks debate
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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
RNA test detects deadly pregnancy disorder early
Coronapod: what people get wrong about endemic COVID
Weirdly flowing water finally has an explanation: 'quantum friction'
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