Do Craze Lines Mean Your Teeth are Cracked? Although craze lines are very tiny cracks in the outermost layer of your tooth, you donât need to worry about your tooth cracking in half. One good way to think about craze lines is to take a look at the above photo of this porcelain doll. The cracks in the porcelain occurred after years of use.
With the invention and installation of ski lifts in the 1930s, Alpine skiing became an increasingly popular and common activity, first in Europe and North America and then later in Australia, New Zealand, Chile, Argentina, and Japan.
The nationâs fastest-growing sport isn't soccer or mixed martial arts. It's not rugby or lacrosse. It might not even be a sport at all. Competitive video gaming, or e-sports, has exploded in the U.S. over the last five years as advances in technology have made the games better and the world smaller. Newzoo, a market research firm, estimates that 93 million Americans are active in sports, but more than twice as manyâ194 millionâregularly play video games.