91av

Skip to content

Environment

Why is black rain falling on Iran and how dangerous is it?

US-Israeli strikes on oil facilities have caused black rain to fall on Tehran, but the black smoke filling the air is likely to be a bigger health risk

News

The volcanic eruption on Hawaii is now making an acidic fog

Earth

The volcanic eruption on Hawaii is now making an acidic fog

News

Landscape

Earth

Acid lakes may be a false alarm but we can’t afford complacency

Leader

Last Word

Whorl class

Regulars

Physics

Magic number makes acid fall apart in water

News

Vast glaciers carved out Martian Grand Canyon

Space

Vast glaciers carved out Martian Grand Canyon

News

Earth

Don't waste CO₂, turn it into bottles and glue

News

Extraordinary stem cell method tested in human tissue

Health

Extraordinary stem cell method tested in human tissue

News

Radioactive acid spill in Australian national park

Earth

Radioactive acid spill in Australian national park

News

Life

Speedy pH changes detected in brain for first time

By tweaking magnetic resonance imaging, we can now visualise changes in the brain's pH – providing new insights into learning, memory and disease

News

Life

Why naked mole rats feel no pain from acid

News

Physics

Modern alchemy turns acid boron into a base

News

Earth

Rock-burning, sea-zapping geoengineering could cut CO₂

News

Health

Psychoactive drugs: From recreation to medication

News