The Great Barrier Reef last year saw its hottest December on record since 1900.

UNSW researchers have worked out how to harvest energy from light at night.

Water could be key to the next generation of solar cells.

Analysis of more than one million satellite images suggest 4,000 square kilometres of tidal wetlands have been lost globally over 20 years.

Tasmanians will see a 3.5 per cent increase to water bills each year until 2025-26.

The PM’s office has blocked requests for text messages that Barnaby Joyce claims constituted his work as drought envoy.

A major wine grower says Murray Darling Basin water market reforms should recognise the most beneficial commodities.

Scientists have briefly revived light-sensing cells in the eyes of a deceased person.

The ACTU has accused Prime Minister Scott Morrison of refusing a wage hike.