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Quick crossword #90: Antibiotic patented in 1960 (9)

26 August 2021

Challenge your brain by solving New Scientist's weekly crosswords on your mobile, tablet or desktop

RESTRICTED TO EDITORIAL USE Mandatory Credit: Photo by MI News/NurPhoto/Shutterstock (12361340a) Extinction Rebellion take over London's West End, UK, on August 23, 2021 on the first day of a two week planned London takeove ron 24th August 2021. Extinction Rebellion Protest In London, United Kingdom - 23 Aug 2021

Extinction Rebellion begins fortnight of climate protests in London

25 August 2021

The protest group Extinction Rebellion is campaigning for government action on climate change in the wake of this month's IPCC report

2E8WY68 Quantum particle, quantum mechanics . 3d illustration

Quantum theory continues to challenge our conception of reality

25 August 2021

It's hard to overstate just what a seismic shift quantum mechanics has brought about over the past century and its ongoing mysteries are a gift that is still giving

Young women preparing and canning fresh homemade strawberry jam, she pouring him into a jar

How to make delicious jam according to science

25 August 2021

We all love home-made jam, but getting it right means grappling with the chemistry of pectin, says Sam Wong

Connecting with nature is good, but can apps help us do it better?

25 August 2021

Time spent in nature has huge benefits for our mental and physical health, and few of us get enough of it. A range of apps aim to help us do it better – but do they work?

Quantum Physics. Atom nuclear model on energetic background, 3D illustration; Shutterstock ID 682727230; purchase_order: PHOTO; job: 25 August online; client: NS; other:

Beyond quantum physics: The search for a more fundamental theory

25 August 2021

Quantum theory can’t be the final answer and some theorists are exploring new ways to formulate physical laws – and yet there is no guarantee that any theory can completely describe the universe

Why it might be impossible to build a practical quantum computer

25 August 2021

After “quantum supremacy”, the next step is scaling up and mastering the errors that dog qubits. But some researchers reckon the noise might always to be too high for useful quantum computers

Coloured transmission electron micrograph (TEM) of chloroplasts from the yellow portion of a yellow/green variegated Coleus blumei plant. Chloroplasts are the sites of photosynthesis, the process that synthesises carbohydrates from carbon dioxide and water using sunlight. The structure of a variegated chloroplast is slightly different from that of a normal green chloroplast. The granal stacks, formed from parallel thylakoids (membranes, bright lines), that contain the chlorophyll pigments are less ordered in the variegated chloroplast. The pigments themselves are also slightly different. Magnification: x14,300 when printed at 10cm wide.

From photosynthesis to navigation, life may exploit quantum effects

25 August 2021

There is tantalising evidence to suggest that photosynthesis in some bacteria depends on quantum coherence and birds’ amazing feats of navigation rely on entanglement

What putting big things in quantum states can tell us about reality

25 August 2021

In principle, there should be no limit on how large objects can get and still display quantum behaviour like superpositions. Physicists testing the idea hope to reveal clues about quantum gravity