More than half of the world's population now lives in cities, yet we know little about how urbanization affects biodiversity.

Thanks to the introduction of various non-native species to Australia throughout history, the country is overrun with feral animals.

Last winter, government agencies killed one third of Yellowstone National Park's bison herd due to concerns about the possible spread of a livestock disease to cattle that graze in areas around the park.

Climate change is hampering the long-term recovery of rivers from the effects of acid rain, as wet weather counteracts improvements, according to a new study by Cardiff University.

A recent study has concluded that wind turbines pose less of a risk to farmland birds than previously thought.