Rising carbon dioxide levels in the air are making plants grow larger and faster, but diluting their nutritional content. This could threaten the health of herbivores worldwide.

In winter 2023-24, the Great Lakes’ ice cover was near record lows, peaking at just 16%. Researchers explain how diminishing ice could have consequences for fisheries, and how species are evolving.

In variable environments, like temperate woodlands, species are not equally at risk.

Feral hogs are one of the most destructive invasive species in North America, harming land, crops and wildlife.

New research from China shows how the loss of insects is destabilising food webs.

Polar bears and wolves may get the glory, but small predators like weasels, foxes and their cousins play outsized ecological roles. And many of these species are declining fast.

Plankton, some of the smallest organisms on Earth, are leading big changes in the ocean.

Megalodon, the world’s largest known shark species, swam the oceans long before humans existed. Its teeth are all that’s left, and they tell a story of an apex predator that vanished.

These tiny organisms play a huge role in fighting climate change, but they're under threat.