The '2018 State of the Polar Bear' report, published by the Global Warming Policy Foundation, confirms that polar bears are continuing to thrive, despite recent reductions in sea ice levels. This finding contradicts claims by environmentalists and some scientists that falls in sea ice would wipe out bear populations. The report’s author, zoologist Dr Susan Crockford, says that there is now very little evidence to support the idea that the polar bear is threatened with extinction by climate change.