A weakening immune system as people age may also play a role, as may a decrease in blood flow and changes in the wound-healing "cascade" that is set off by injury.
Society is set off from the Baptist Church of Reading.
The increase in warmer days in winter sends false signals to plants and animals whose seasonal changes can be set off by the temporary warmth.
The sheer scale of China's engineering to harness the power of the Mekong and change its natural flow is setting off alarm bells, especially in Vietnam, Cambodia, Thailand and Laos, the four countries of the lower Mekong basin where more than 60 million people depend on the river for food, water and transportation.
"There is this huge expectation of change and this expectation has been set off by the president's announcement," John Caulfield, who led the U.S. Interests Section in Havana until last year, told the Associated Press.
Cornell physicists have identified the physical mechanisms behind these protein attractions, which are set off by changes in cellular membranes.
Many contracts, like the now-infamous one struck with the search engine Mozilla, which may result in a payment of up to a $1 billion, will contain change-of-control provisions that will be set off and have to be addressed.
They were set off by changes to the social security system approved by the Ortega administration this week, but they also tapped growing discontent with the government, protesters and analysts said.
Previous changes in the world's climate have been set off by variations either in the angle of the Earth's rotation or in its distance from the sun.
