HIV/AIDS at a Glance. 1  HIV is the infection that causes AIDS. 2  HIV has few or no symptoms for up to 10 years or more before symptoms of AIDS develop. 3  There is no cure for HIV/AIDS, but treatment is available. 4  HIV can be spread during sex play.
According to State of the Climate 2013, global average sea level 2013 was 1.5 inches (38 mm) above the 1993-2010 average, the highest yearly average in the satellite record (since 1993), and sea level continued rising at a rate of one-eighth of an inch (3.2 mm) per year.atellite altimeter data gathered from 1993 to 2003 indicate that the rate of global average sea level rise increased to 3.1 mm per year, or about one and a quarter inches per decade.
The global average surface temperature rose 0.6 to 0.9 degrees Celsius (1.1 to 1.6Â° F) between 1906 and 2005, and the rate of temperature increase has nearly doubled in the last 50 years.Temperatures are certain to go up further. Despite ups and downs from year to year, global average surface temperature is rising.By the beginning of the 21st century, Earthâs temperature was roughly 0.5 degrees Celsius above the long-term (1951â1980) average. (NASA figure adapted from Goddard Institute for Space Studies Surface Temperature Analysis. ).lobal warming is the unusually rapid increase in Earthâs average surface temperature over the past century primarily due to the greenhouse gases released as people burn fossil fuels.