Salt, sand and snow: The environmental costs of winter safety
With the fluctuating temperatures of late winter, roads and walkways continue to be treated with salt and sand to improve safety. But what happens to all that excess material after a long winter?
Where do they go in the winter?
Winter is a time of incredible adaptation - from luna moths that wrap their cocoons in leaves, to frogs that freeze and thaw, animals have unique ways of surviving the cold.