The front of Thwaites Glacier is a jagged, towering cliff.
David Vaughan/British Antarctic Survey
Thwaites Glacier’s ice shelf appears to be splintering, and scientists fear it could give way in the next few years. A polar scientist takes us on a tour under the ice to explain the forces at work.
When offspring become more “costly” to make, mothers make fewer of them. And these offspring start life with fewer energy reserves.
Mercury levels in Pacific sardines could rise by as much as 14 per cent if greenhouse gas emissions continue to rise.
Regulations have lowered mercury emissions globally, but the risks to ocean ecosystems and human health may be getting worse.
The aftermath of tropical cyclone Idai, which made landfall near Beira, Mozambique earlier this year.
flickr/ Climate Centre
As storm directions change, countries that are outside the usual tropical storm zones need to ready themselves.
Since the last ice age, the ice sheet retreated over a thousand kilometres in the Ross Sea region, more than any other region on the continent.
New research shows that ocean and air temperatures both contributed to the melting of Antarctica’s Ross Ice Shelf in the past, but melting from below by a warming ocean became more important over time.
Sea grass meadows at Bonna Point.
Valentina Hurtado-McCormick, Author provided
Seagrass may look unassuming, but healthy oceans depend on the huge meadows that grow in temperate and tropical waters.
Phytoplankton under a microscope.
Phytoplankton are tiny, but they do important work.
Sustained ocean warming could greatly reduce catches of fish like these herring photographed off Norway.
Fish are a key food source for millions of people worldwide. But a recent study finds long-term warming over the next 200 years could starve tiny plankton, with impacts that would ripple up food chains.
Much of Australia is set for a hot April.
Record-breaking April heat is likely to continue for at least another month.