Most polar bear populations will collapse by the end of the century if global warming continues at the current pace, a new University of Toronto Scarborough study has found.

Microplastics have been found in the guts of sharks that live near the seabed off the UK coast.

The depth of a hydraulic fracturing well in Oklahoma, among other factors, increases the probability that fracking will lead to earthquake activity, according to a new report in the Bulletin of the Seismological Society of America.

The Dragonfly Mercury Project engages citizen scientists such as students and teachers in the collection of juvenile dragonflies, also known as dragonfly larvae, from national parks for mercury analysis.

Recent accounts in the media have described the appearance of lion’s mane jellyfish in waters and beaches in the Northeast as a surprising, sometimes troubling, event, with record sizes and numbers reported from Maine to the Massachusetts south coast.

Fish market favourites such as orange roughy, common octopus and pink conch are among the species of fish and invertebrates in rapid decline around the world, according to new research.

The global population of the critically endangered Chinese crested tern has more than doubled thanks to a historic, decade-long collaboration among Oregon State University researchers and scientists and conservationists in China, Taiwan and Japan.

Scientists at the University of Washington have developed a tiny, wireless camera small enough to be worn by insects.

Could we create massive sulfuric acid clouds that limit global warming and help meet the 2015 Paris international climate goals, while reducing unintended impacts?

Antarctica is considered one of the Earth’s largest, most pristine remaining wildernesses.