Humans have increased atmospheric CO 2 concentration by more than a third since the Industrial Revolution began. This is the most important long-lived forcing of climate change. Methane.
Buy Forever stamps online directly from USPS. The current Forever stamp value is 49-cents - the current First-Class Mail one-ounce rate.
The current `017 $0.49 is the exact amount that went into effect January 26, 2014 as the result of a $0.03 increase from $0.46. Another prior rise in rates occurred January 27, 2013 when the price of a first class letter sent through the United States Post Office went up $0.01 to $0.46. At which time there was also the introduction of the global forever stamp for delivery of letters anywhere in the world.