Inflammation : The potential space between chest wall and lungs has thin lining--- the pleura , chest wall lining the parietal pleura is very sensitive any inflammation will cause severe pain, effusion is the result of inflammation on the pleura. ...Read more.
Series EE bonds earn interest for 30 years from date of issue. Because these bonds were first issued in 1980, all Series EE bonds are still earning interest. Series E bonds issued in November 1965 or before earn interest for 40 years from date of issue. Because some of these bonds were issued as far back as World War II, some have stopped earning interest.
Today (3/22/2012) the interest rate on the EE series savings bond is 0.6%. There was no way that an interest rate of 0.6% could lead to doubling of the value of a bond in 20 years. In fact, the value of the bond would increase less than 15% over the 20 years. The effective interest rate on EE Series savings bonds had to be a lot more than 0.60%. Using semi-annual compounding over 20 years, a $1000 bond will become $2001.60 (double in value) with an interest rate of of 3.5%. How good is a 3.5% interest rate? The current interest rate on a 20 year treasury bond is 3.06%. The rate on the savings bond is 0.44% higher than the rate of the 20 Year Treasury bond. Given that US Savings Bonds are just as safe as the 20 year Treasury, getting almost a half-percent more yield is great. Once you include the tax benefits, EE series savings bonds are a much better investment than treasuries.