Snow cover in the mountains of Greece – an important water source for communities, agriculture and natural ecosystems during the dry summer months – has more than halved over the past four decades, a study has found.

The evolutionary edge that fueled great white shark dominance for millions of years could soon become its greatest downfall.

Atmospheric dust plays a dual role in Earth’s climate: it reflects some sunlight back into space while also absorbing and retaining the planet’s heat like an insulating blanket.

The study, led by the University of Cambridge with collaborators from the University of California and published in the journal Communications Earth & Environment, compiled long-term ocean measurements collected by ships and robotic floating devices to show that a warm mass called circumpolar deep water has expanded and shifted toward the Antarctic continental shelf over the past 20 years.

Experimental increases in CO₂ stimulated plant growth are facilitated by re-distributed root systems to extract nutrient resources more efficiently.

For the first time since records began, the cold, nutrient-rich waters of the Gulf of Panama failed to emerge.

As future shifts in climate lead to more rain and less snow in the western United States, new research finds that water will move faster through a landscape, likely leading to negative impacts on summer water levels and water quality.

When ecologist Patrick Sullivan flew into the Salmon River in Alaska to conduct a vegetation study in the summer of 2019, he was excited about paddling down the pristine Arctic river. Before he and his colleague got there, however, the pilot warned that they might not see what John McPhee had described, in his best-selling book Coming Into the Country, as the “purest water I have ever seen.”

Even after fires, severe droughts, and windstorms, the vegetation in degraded Amazonian forests demonstrates a high capacity for regeneration, including tree species.

The research, led by the University of Bristol in collaboration with international scientists and published in PNAS today [insert date], analysed more than 900 fossil deep-sea stony corals collected from depths of up to 1,000 metres.