In emergencies, dumping ocean water on fires may be the best option. But seawater can have long-term effects on equipment and ecosystems, as a novel coastal experiment shows.

The heath-related impacts of climate change will reach US$1 trillion a year by 2050.

These ‘warming stripes’, adopted around the world as a symbol of climate awareness, action and ambition, now include another dark red stripe for 2024.

2024 was first calendar year with warming above 1.5°C with unprecedented extremes putting humans and ecosystems at risk

The oceans have been much warmer than average for the past two years, and the planet just set another global heat record. What’s going on?

The global ocean saw its hottest year on record by far for the second year in a row. What’s going on?

Water availability regulates tree growth and can have ‘legacy effects’ long after conditions change.

Where people live today also makes a difference when it comes to fire risk.

New evidence that low levels of atmospheric CO2 led to the longest ice age in Earth’s history.

Some experts say we should see the climate crisis as a collective trauma.