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Magical image of ‘tree island’ shortlisted for major photo prize

24 June 2021

This aerial image showing part of Sofiyivsky Park in Ukraine is among the shortlisted entries for the Earth Photo 2021 competition

Cryptic crossword #60: After surgery, learn about the kidneys (5)

24 June 2021

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

Does quantum physics explain why parcel delivery times are so vague?

23 June 2021

The quantum physics of parcels, plus catering to the time traveller market and more inappropriate measurement comparisons, in Feedback’s weird weekly round-up

Long covid: We have ignored post-viral syndromes for too long

23 June 2021

Long covid is strange and mysterious in part because of a lack of investment in researching post-viral syndromes like chronic fatigue syndrome – it is time to change that

How your seaweed-filled beach pics could help monitor climate change

23 June 2021

Seaweed can reveal a lot about marine ecosystems. Take part in the Big Seaweed Search to help researchers discover how climate change is impacting UK sea life

This week’s new questions

23 June 2021

What is the smallest number with no interesting properties? And why are bird droppings mostly white, considering all the things they eat?

Where did the bacteria that turn milk into yogurt come from?

23 June 2021

Did the bacteria in milk products evolve after humans started to store milk and, if not, what did their forebears do?

Why is a cup of tea so satisfying and comforting?

23 June 2021

Our love of tea could be due to the chemicals it contains or the rituals around making and serving it

Why do herring have lots of small bones, and mackerel the opposite?

23 June 2021

Evolution has had 500 million years to tinker with the anatomy of fish, but is it to make them better swimmers or to help them avoid predation? And are fish bones even bones? Readers respond