Cyanobacteria are found almost everywhere; in oceans, lakes and rivers as well as on land. They flourish in Arctic and Antarctic lakes, hotsprings and wastewater treatment plants. They even inhabit the fur of polar bears, to which they impart a greenish tinge.
Amazon is initially offering FreeTime Unlimited, which costs Prime members $2.99 per month per child -- or $6.99 per family -- on the Kindle Fire (2012), Kindle Fire HD, and Kindle Fire Fire HD 8.9. If you're not a Prime member, the monthly fee jumps to $4.99 and $10.99, respectively. The name of the service is a bit oblique.
The bigger goal is to encourage shoppers to sign up for a Prime subscription, which offers free two-day shipping and other perks for members. A monthly membership costs $10.99; an annual membership is $99. Last year's event led to more people trying Prime than any day in the site's history, Amazon said.