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.
But the [climate] models are getting a lot stronger, said Jay Gulledge, a senior research at the Pew Center on Global Climate Change in Arlington, Virginia. Gulledge says some current projections point to a rise in average global temperature of 0.5Â°C (slightly less than 1Â°F) by the year 2030. The estimates are based on greenhouse gasses already in the atmosphere. While the temperature increase is small, it would be significant. Over the past century Earth has warmed about 1Â°F (0.6Â°C). (See our fast facts on global warming.) Gulledge cautions, however, that warming rates depend on many factors, some of which have yet to be discovered.