Carotid artery disease is caused by a buildup of plaques in arteries that deliver blood to your brain. Plaques are clumps of cholesterol, calcium, fibrous tissue and other cellular debris that gather at microscopic injury sites within the artery. This process is called atherosclerosis.
Great white sharks may not be the world's biggest sharks, since that title goes to the whale shark, but they are the planet's largest known predatory fish. Whale sharks and great whites couldn't be more different in temperament.
'Biggest shark caught on camera' nicknamed Deep Blue flashes her razor-sharp teeth in new awe-inspiring video. New footage has emerged of a 20-foot-long great white shark named 'Deep Blue' which is believed to be the largest of its kind in the world. The footage was captured by shark researcher Mauricio Hoyos Padilla off Mexico's Guadalupe Island in 2013, but wasn't released until now because he had only recently found the recording on his computer.