SPACE PHYSICS
Instant Expert: Black holes They are among the weirdest and most mysterious objects in the universe. Find out all about these cosmic vacuum cleaners with our comprehensive guide to black holes
HEALTH
Dilute disinfectant boosts bacterial resistance Some microbes and viruses become resistant to disinfectant if exposed to dilute solutions, which may be accelerating their spread in hospitals
OLD AGE
Monkeys listen to their elders Teenagers: learn from your primate cousins. Campbell’s monkeys pay most attention to the calls of older members of their species
TECHNOLOGY
Typing style reveals stress levels A person can be identified just…
