Inside the powerful fire clouds that pack a volcanic punch
4 September 2019
This rare image shows massive pyrocumulonimbus clouds that form above fires and can funnel as much smoke into the lower stratosphere as moderate volcanic eruptions
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Premium
How a Soviet space station became a symbol of space cooperation
4 September 2019
Many disasters befell the space station Mir, not least the collapse of the state that built it – but it showed how nations could come and work together in orbit
What makes us addicts? Judith Grisel is determined to find out
4 September 2019
After experiencing addiction herself, neuroscientist Judith Grisel wants to know what makes some people more prone to it than others
This week’s new questions
4 September 2019
Why are dogs immune to stinging nettles, and could Jupiter ever become a star? Send us your answers
How can a tree reabsorb its own branch?
4 September 2019
One reader explains the events that lead to a tree reabsorbing its own branches
What is the carbon payback period for a wind turbine?
4 September 2019
How long does it take to pay back the energy and resources used to make a wind turbine, and are they worth building? Our readers have the answers
A road made of solar panels seemed like a good idea. Now it's broken
4 September 2019
The sun sets on France's solar road, plus robot censors and Porsche-powered cycling in Feedback's weekly round-up from the world of weird
New Scientist puzzle #20 plus quick quiz
4 September 2019
Some general knowledge or numerology will help with Julius Caesar’s riddle. Plus answer to puzzle #19, and the quiz
New Scientist cryptic crossword #14
4 September 2019
The latest science-themed cryptic crossword, set by Wingding. Plus answers to quick crossword #39
How to make a remote-controlled pest-proof bird feeder
4 September 2019
The first part of a two-stage project to make a bird feeder that you can open and close at will, keeping out unwanted guests and letting birds eat in peace
