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A note from the culture editor
Taking out the junk • Removing processed food from our diets will be no easy task
New Scientist
G7 urged to donate now • As the G7 summit convenes in the UK this week, pressure is mounting on wealthy countries to donate more vaccines, reports Clare Wilson
How to make travel safe • As movement resumes between countries, Graham Lawton reports on the best border strategies and how to journey as safely as possible
How to go abroad and minimise your covid-19 risk
Don’t shoot the messenger • Devi Sridhar has been a constant voice in the ear of governments throughout the pandemic. She tells Adam Vaughan why scientists aren’t to blame for lockdowns
Brain map is most detailed ever • A tiny cube of human brain contains 130 million neural connections
Strange icy balls may help us to crack mysteries of star formation
Cyborg cockroaches with cameras can be steered remotely
Sharks almost went extinct 19 million years ago
Walking robots have the potential to be far more efficient
NASA plans two Venus missions • The atmosphere and surface of Earth’s toxic sibling will get a closer look
Colour-changing tampons could detect UTIs
Cosmic collisions may push huge black holes off-kilter
Parasitic ants keep evolving to lose smell and taste genes
Drug safety in pregnancy • New drugs are rarely tested during pregnancy, leaving harmful gaps in our medical knowledge. Will that ever change, asks Melba Newsome
Thalidomide tragedy
Superspeed of the elephant’s trunk revealed
The dog-human bond is in the genes
Grades suffer if lectures are early
Really brief
Dream of hack-proof network gets a boost
Barnacles inspire glue made of silk that works underwater
Atlantic whales are shrinking
Don’t judge • It’s incredibly important that we start believing people when they ask for help with their mental health, says Lucy Foulkes
The 40,000-year-old tradition of new media • Amazon has acquired the movie studio MGM. The move by the streaming giant is just following an ancient pattern, writes Annalee Newitz
Your letters
Tough road to the top • How did Hakeem Oluseyi move from dealing drugs to teaching astrophysics? His vivid memoir tells all, finds Vijaysree Venkatraman
Building it right • Civilisation’s great buildings took a lot of energy to construct. So where does climate change leave us, asks Simon Ings
Don’t miss
Brain tech vs real lives • The ethics of getting a brain-boosting implant for you or your children makes for an interesting sci-fi novel, finds Robyn Chowdhury
Dangerously delicious • Processed food has a bad reputation, but is it uniquely bad for our health? Clare Wilson investigates
Reprocessing junk food
“Many people see cities as villains. I prefer a more nuanced narrative” • Urban environments are growing fast. Engineer Anu Ramaswami tells Laura Spinney how we can make our cities more sustainable and better places to live
When time runs backwards • At the smallest scales, the world can and does run in reverse. This revelation is helping us understand the engines that power life itself, finds Benjamin Skuse
Spotting the summer triangle • In the northern hemisphere, the...