How many hearts does an octopus have?
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Reference: NPR
An octopus has three hearts: two pump blood through the gills and one pumps it to the rest of the body.
Sea otters have the densest fur of any animal, up to about a million hairs per square inch.
In 1990 in California alone, wind power offset the emission of more than 2.5 billion pounds of carbon dioxide and 15 million pounds of other pollutants - the same amount of air quality provided by more than 150 million trees.