The Trans-Alaska Pipeline: Lessons for the Keystone XL Pipeline Debate. Joel Griffith is a research associate for the chief economist at The... Citing various environmental and economic objections, in April, the Obama Administration again delayed construction of the Keystone XL Pipeline, this time until at least early 2015.
Stretch marks are often associated with pregnancy, which is why they are more common in women, but they can appear whenever your body is going through rapid changes, such as during puberty or times of great weight loss or gain.
This gives stretch marks their initial dark color, although the blood vessels retreat back into the dermis over time so the color fades. Because the epidermis doesn't have strong support from the dermis along the stretch mark lines, the lines tend to be raised and look wrinkly.