While calorie counts vary with pizza toppings and recipes, a slice of cheese pizza (weighing about 103 grams) is around 272 calories, according to LiveStrong.com. A calorie counting website averaged a slice of cheese pizza at nearly 250 calories. Indulge wisely and check out these eight pizza deals for Pi Day. Read: The Best Pi Day Jokes. Villa Italian Kitchen: Customers can get a Neapolitan cheese pizza for $3.14 with a coupon.
The Navy's nuclear-powered submarines can stay submerged for long periods of time. Air is isn't a problem as their make their own oxygen and keep the air clean. The limits on how long they can stay underwater are food and supplies. Submarines generally stock a 90-day supply of food, so they can spend three months underwater. The diesel-powered submarines (not now used by the Navy) had a limit of several days submerged.
The Bottlenose whales and Sperm whales can stay underwater for almost 2 hours on long dives. Most of the large whales, like the Blue whale and the Fin whales, rarely stay down longer than 40 minutes while large dolphins such as the Bottlenose dolphin usually stay down for less than 15 minutes.