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 ## Your unique pattern of brain activity can be spotted in 100 seconds: 

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[Everyone has a unique pattern of brain activity and it can be spotted after just 100 seconds inside a brain scanner](https://www.newscientist.com/article/2293992-your-unique-pattern-of-brain-activity-can-be-spotted-in-100-seconds/)



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 ## Climate change could slow recovery of southern right whales: 

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[Extreme El Niño weather events caused by climate change could slow the recovery of southern right whale populations](https://www.newscientist.com/article/2293979-climate-change-could-slow-recovery-of-southern-right-whales/)



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 ## Self-healing plastic repairs itself in 10 seconds even under water: 

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[A new type of strong, flexible self-healing plastic can repair itself rapidly, even in salty or acidic water, which may be useful for divers or underwater pipes](https://www.newscientist.com/article/2293919-self-healing-plastic-repairs-itself-in-10-seconds-even-under-water/)



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 ## Arid meteor shower makes new appearance in southern hemisphere skies: 

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[A meteor shower called the Arids has appeared in southern hemisphere skies, as predicted by astronomers](https://www.newscientist.com/article/2293968-arid-meteor-shower-makes-new-appearance-in-southern-hemisphere-skies/)



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 ## Covid-19 news: UK lab may have given 43,000 false PCR test results: 

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[The latest coronavirus news updated every day including coronavirus cases, the latest news, features and interviews from New Scientist and essential information about the covid-19 pandemic](https://www.newscientist.com/article/2237475-covid-19-news-uk-lab-may-have-given-43000-false-pcr-test-results/)



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 ## Contraceptive pill may reduce polycystic ovary syndrome diabetes risk: 

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[Women with polycystic ovary syndrome (PCOS) who take the contraceptive pill have three-quarters of the diabetes risk as those with PCOS who don’t](https://www.newscientist.com/article/2293869-contraceptive-pill-may-reduce-polycystic-ovary-syndrome-diabetes-risk/)



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 ## Will PayPal's adoption of bitcoin make cryptocurrency more mainstream?: 

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[PayPal will now allow customers to buy and sell four cryptocurrencies, which could make it more useful for everyday life. Is this the moment when cryptocurrencies become mainstream?](https://www.newscientist.com/article/2288039-will-paypals-adoption-of-bitcoin-make-cryptocurrency-more-mainstream/)



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 ## Why it is so important to protect access to the dark night sky: 

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[The night sky has wowed people since the dawn of time, but it is becoming increasingly difficult to get a good view, writes Chanda Prescod-Weinstein](https://www.newscientist.com/article/mg25133480-100-why-it-is-so-important-to-protect-access-to-the-dark-night-sky/)



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 ## Ventilation can make schools and offices safe from covid-19 – but how?: 

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[Maximising airflow in public spaces is crucial to cut covid-19 transmission, but questions remain about what technology to use and how effective it needs to be](https://www.newscientist.com/article/mg25133484-200-ventilation-can-make-schools-and-offices-safe-from-covid-19-but-how/)



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 ## Environmentalist Jonathon Porritt’s big idea to slow global warming: 

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[Regenerating natural systems will draw carbon out of the atmosphere and help tackle climate change. We must recarbonise Earth now, says Jonathon Porritt](https://www.newscientist.com/article/2287520-environmentalist-jonathon-porritts-big-idea-to-slow-global-warming/)