A mid-sized jet, the 757 isnât nearly the size of a 747 or 777, but thanks to a nasty aerodynamic quirk it produces an outsized wake that, according to one study, is the most powerful of any airplane. To avoid wake upsets, air traffic controllers are required to put extra spacing between large and small planes.
Causes: Colorectal cancer: All kinds of cancer occur when cell division, normally a very highly regulated process, gets out of control. While environmental factors can certainly contribute to a person's risk of cancer (e.g. smoking, diet, and exercise), most cancers have a genetic basis too.
Estimated New Cases of Colorectal Cancer per Year. Your lifetime risk of developing colorectal cancer is about 1 in 21 for men and 1 in 23 for women. Cancers of the colon and rectum account for 8% of the new cases of cancer in both men and women. Over 134,000 new cases are diagnosed each year. Of those, about 95,000 cases will be colon cancer and almost 40,000 cases will be rectal cancer.