https://images.newscientist.com/wp-content/uploads/2022/11/29213558/SEI_135501799.jpg ## COP15: What to expect at the biggest biodiversity summit in a decade:

[After a two-year delay, the COP15 summit will convene in Montreal to hammer out an agreement to address the biodiversity crisis](https://www.newscientist.com/article/2349121-cop15-what-to-expect-at-the-biggest-biodiversity-summit-in-a-decade/) https://images.newscientist.com/wp-content/uploads/2022/11/30161635/SEI_135732474.jpg ## Ant pupae produce a nourishing liquid food for larvae and adults:

[Researchers have observed several species of ants that produce a liquid while in a pupal stage that then gets consumed by their larvae and adults, with the team expecting this to occur across all ant species](https://www.newscientist.com/article/2349378-ant-pupae-produce-a-nourishing-liquid-food-for-larvae-and-adults/) https://images.newscientist.com/wp-content/uploads/2022/11/29225158/SEI_135659099.jpg ## A quantum computer has simulated a wormhole for the first time:

[Researchers have used Google's Sycamore quantum computer to simulate a simplified wormhole for the first time, and sent a piece of quantum information through it](https://www.newscientist.com/article/2349118-a-quantum-computer-has-simulated-a-wormhole-for-the-first-time/) https://images.newscientist.com/wp-content/uploads/2022/11/30143813/SEI_135729005.jpg ## Ancient bird with a movable beak rewrites the story of avian evolution:

[The earliest birds were thought to have a fused upper beak like ostriches, but a skull bone from 67 million years ago reveals that jointed beaks came first](https://www.newscientist.com/article/2349337-ancient-bird-with-a-movable-beak-rewrites-the-story-of-avian-evolution/) https://images.newscientist.com/wp-content/uploads/2022/11/30152504/SEI_135726046.jpg ## Star ripped up by black hole is one of the brightest things ever seen:

[A star orbiting a supermassive black hole at the centre of a distant galaxy was ripped apart in a tidal disruption event, the furthest ever observed](https://www.newscientist.com/article/2349352-star-ripped-up-by-black-hole-is-one-of-the-brightest-things-ever-seen/) https://images.newscientist.com/wp-content/uploads/2022/11/30102827/SEI_135703799.jpg ## Alzheimer's drug lecanemab slows cognitive decline but concerns linger:

[The drug lecanemab slowed the rate of cognitive decline among people with early Alzheimer's disease by 27 per cent, compared with placebo infusions, but some question if its potential safety concerns outweigh any benefits](https://www.newscientist.com/article/2349153-alzheimers-drug-lecanemab-slows-cognitive-decline-but-concerns-linger/) https://images.newscientist.com/wp-content/uploads/2022/11/29144732/SEI_135494875.jpg ## An mRNA vaccine protects mice against deadly plague bacteria:

[The bacterium Yersinia pestis causes frequent outbreaks that kill people, but a new vaccine based on cutting edge technology has shown promise in a mouse study](https://www.newscientist.com/article/2349048-an-mrna-vaccine-protects-mice-against-deadly-plague-bacteria/) https://images.newscientist.com/wp-content/uploads/2022/11/29160115/SEI_135479694.jpg ## Critically endangered tiny gecko comes back from the brink:

[The population of Union Island geckos plummeted due to growing demand from the illegal international pet trade, but conservationists working with locals in Saint Vincent and the Grenadines have helped boost its numbers](https://www.newscientist.com/article/2349047-critically-endangered-tiny-gecko-comes-back-from-the-brink/) https://images.newscientist.com/wp-content/uploads/2022/11/29180303/SEI_135609894.jpg ## Drug clears sleeping sickness parasite from the body in clinical trial:

[In a small trial, an experimental medicine was 100 per cent effective at ridding the parasite that causes sleeping sickness from the bodies of people with an early to intermediate infection](https://www.newscientist.com/article/2349078-drug-clears-sleeping-sickness-parasite-from-the-body-in-clinical-trial/) https://images.newscientist.com/wp-content/uploads/2022/11/29225145/SEI_135659245.jpg ## Mauna Loa eruption interrupts key record of atmospheric CO2:

[The Mauna Loa Observatory has kept a nearly uninterrupted record of atmospheric carbon dioxide for more than 60 years, but a volcanic eruption has cut off power](https://www.newscientist.com/article/2349130-mauna-loa-eruption-interrupts-key-record-of-atmospheric-co2/)