51动漫

A front-view shot of a man cleaning the floor with a mop, he is wearing casual clothing.

Health

Cleaning products cause indoor pollution levels similar to a busy road

Fragrant chemicals in scented surface cleaners react with ozone to produce pollutant particles that may be harmful to the respiratory system

Rosalind Franklin ExoMars rover

Space

Russian sanctions mean ESA’s Mars rover is unlikely to launch in 2022

Radiation map

Physics

Chernobyl radiation spike probably from Russian tanks disturbing dust

Fields medal

Physics

Mathematicians are angry that Russia may still host a major conference

Building on fire

Technology

Is Russia winning the disinformation war in Ukraine?

Health

Antibiotic-resistant superbug has a protein coat like chain mail

Bitcoin

Technology

UK intelligence agencies are investigating cryptocurrency transactions

Visualizing inferred human ancestral lineages over time and space. Each line represents an ancestor-descendant relationship in our inferred genealogy of modern and ancient genomes. The width of a line corresponds to how many times the relationship is observed, and lines are colored on the basis of the estimated age of the ancestor.

Humans

Largest ever family tree of humanity reveals our species’ history

Artist impression of the X-ray binary system containing a black hole (small black dot at the center of the accretion disk) and a companion star. The jet that is directed along the black hole spin axis is strongly misaligned from the rotation axis of the orbit. Image produced with the Binsim software.

Space

Wonky black hole hints we don’t understand how cosmic behemoths work

Mature man sleeping wearing eye mask close up

Health

Brain cells that regulate wakefulness may become overactive with age

Brain cells that promote wakefulness fire too much in older mice, which may explain why many people find it harder to sleep as we get older

Meet the machines that that can evolve all by themselves

Technology

Risk of nuclear disaster is minimal as Russian forces reach Chernobyl

Life

Slug poo helps mushrooms start new colonies by spreading spores

Life

Pet dogs really do grieve the deaths of other dogs they live with