America’s air is getting cleaner — except in places that are prone to wildfires. Read more

Many media outlets reporting on President Trump’s cognitive assessment test could make it harder for doctors to use the exam to spot dementia. Read more

A new computer program sifts through all possible solutions to find the best answer to a given problem far faster than other algorithms. Read more

Sleep deprivation may speed up development of Alzheimer’s disease. Read more

New charts of Pluto and its moon Charon, compiled using New Horizons’ data, reveal high peaks, deep depressions and strange ridges. Read more

Women today may be at greater risk of depression during pregnancy than previous generations. Read more

Virtual reality may be good training ground for facing your fears in real life. Read more

Pig-tail macaques are seen as a menace on Malaysian palm oil plantations, but may be helping to reduce rodent populations. Read more

In the last half-century, neutrino detectors have spotted particles cast out by the sun, Supernova 1987A and, possibly, volatile supermassive black holes. Read more

Replacing missing gut microbes improves autism symptoms in children even two years later. Read more