Numbers in the News

Approximate volume, in gallons, of lava that streamed into the Pacific Ocean during a month-long flow from the Hawaiian volcano Kilauea.

Number of newly discovered reptile species in Madagascar, including a gecko that sheds its scales to escape predators.

Amount of particle pollution, in milligrams, that London subway riders are exposed to on a typical commute—mainly due to open windows. Car drivers get less since many keep their windows closed.

Number of inches that the Millennium Tower in San Francisco has sunk since 2009, new satellite images show, likely because it’s not on bedrock.

Number of digits found on organic-produce labels (conventional produce has 4). Some companies are replacing stickers with laser markings burned into produce’s skin to reduce waste.