Earth
These strange lines of cloud are seeded by pollution from ships
Much as an aeroplane leaves contrails, streaks of white cloud condense onto the tiny particles thrown into the air by the exhausts of travelling ships
Regulars
Earth
Spectacular light pillars rise up in frozen North America
Regulars
Environment
Mars rocks may have drunk up all the water and doomed life there
News
Earth
Bright skies at night: The riddle of the nocturnal sun
Features
Earth
Ancient microbes caused Earth’s first ever global warming
News
Space
We may know why Jupiter’s Great Red Spot is red instead of white
News
Space
A layer of haze keeps Pluto’s atmosphere extremely cold
News
Earth
Dimming the sun could save corals from bleaching and hurricanes
News
Environment
Lunar volcanoes and lava lakes gave the early moon an atmosphere
News
Earth
A few cold drops falling through a cloud could create a downpour
One raindrop that is less than 4°C cooler than the surrounding cloud can trigger a rapid burst of microdroplets, which can spawn a sudden rainstorm
News
Earth
Lightning storms triggered by exhaust from cargo ships
News
Environment
Jupiter’s powerful aurora is surprisingly different from Earth’s
News
Earth
The ethics issue: Should we geoengineer the planet?
Features
Environment
Our young moon’s supersonic winds made waves in its magma ocean
News