US pharmacy chains responsible for vast majority of the recorded 182,874 wasted doses, according to Kaiser Health NewsUS pharmacy chains CVS and Walgreens are responsible for the vast majority of wasted vaccine doses, which total more than 180,000 reported to the Centers for Disease Control and Prevention (CDC), according to a story from Kaiser Health News.As of late March, the CDC recorded...

The solutions to today’s puzzlesEarlier today I set you four puzzles by Paulo Ferro, a Portuguese puzzle maker.1. Trapezium or trap-not-so-easy-um? Continue...

Even short, temporary increases in airborne particles can damage brain health, research suggestsTemporary rises in air pollution may impair memory and thinking in older men, according to research that indicates even short-term spikes in airborne particles can be harmful to brain health.Scientists found that the men’s cognitive performance fell following rises in air pollution during the month...

Indian government accused of complacency, with shortage of jabs likely to continue ‘for months’Coronavirus – latest updatesSee all our coronavirus coverageSevere Covid-19 vaccine shortages have hampered India’s plan to administer jabs to all adults, with fewer then half of India’s states able to begin vaccinating over-18s amid warnings the shortfall could last months.Over the weekend,...

Jeffrey Karp is at the forefront of a new generation of scientists using nature’s blueprints to create breakthrough medical technologies. Can bioinspiration help to solve some of humanity’s most urgent problems? By Laura Parker Continue...

Our South Asia correspondent reflects on a catastrophe that is now affecting the lives of almost everyone in the countryYou recently lost a close colleague, Kakoli Bhattacharya, to Covid-19. Can you tell us about her and the important work that she did? Kakoli was the Guardian’s news assistant over here and had worked for us since 2009. She could find any number or contact I needed and smoothed...

The crisis in India forced the west to respond. But without an ambitious global plan, other nations may suffer similar fatesAs the number of Covid-19 cases rose dramatically in Europe and the US during the early part of last year, something strange seemed to be happening in the global south. South Africa’s entire death toll was less than 100 at the same time that Britain was losing more than...

The Eta Aquarids may not be the most spectacular meteors of the year but they are fun to seeThis week, keep an eye open for the Eta Aquarids meteor shower. Shooting stars from this annual display can usually be seen between 19 April and 28 May. This year they are expected to peak in the pre-dawn sky of 5 May, but the morning before and after are worth a try too. Continue...