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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Higgs boson turns ten: the mysteries physicists are still trying to solve
Ed Yong on the wondrous world of animal senses
Norovirus could spread through saliva: a new route for infection?
Audio long read: These six countries are about to go to the Moon
Coronapod: USA authorises vaccines for youngest of kids
How science can tackle inequality
How the Black Death got its start
Coronapod: COVID and smell loss, what the science says
Ancient 'giraffes' sported thick helmets for headbutting
Audio long read: The brain-reading devices helping paralysed people to move, talk and touch
Robot exercises shoulder cells for better tissue transplants
Coronapod: 'A generational loss' - COVID's devastating impact on education
X-ray analysis hints at answers to fossil mystery
How galaxies could exist without dark matter
Coronapod: 'viral ghosts' support idea that SARS-CoV-2 reservoirs could be behind long COVID
Retinas revived after donor's death open door to new science
Swapping in a bit of microbial 'meat' has big eco-gains
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
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