The Cook Companies
Global warming is an overall increase in the average temperature of Earth's surface. Since the late 1800's, the global average
temperature has increased about 0.7 to 1.4 degrees F (0.4 to 0.8 degrees C). Many experts in this area estimate that the average
temperature will rise an additional 2.5 to 10.4 degrees F (1.4 to 5.8 degrees C) by 2100. That rate of increase would be much larger than
most past rates of increase.
According to NASA scientists the top five warmest years since 1890 were: 1) 2005 2) 1998 3) 2002 4) 2003 5) 2004.
Global Warming and Climate Change
NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth’s climate close
to critical tipping points, with potentially dangerous consequences for the planet.
Researchers have recovered a nearly two-mile-long cylinder of ice from eastern Antarctica that contains a record of atmospheric
concentrations of carbon dioxide (CO2) and methane--two potent and ubiquitous greenhouse gases--spanning the last two glacial
periods. Analysis of this core shows that current atmospheric concentrations of CO2--380 parts per million (ppm)--are 27 percent higher
than the highest levels found in the last 650,000 years.
Ice core secrets of the climate are unlocked.
NASA Links Pages