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The ongoing rise in greenhouse gas emissions may trigger a rapid, irreversible collapse in an Antarctic ice sheet the size of Mexico, with potentially catastrophic consequences, a study published last week in the journal Nature found.
Extreme temperatures linked to climate change can be expected to cause a significant increase in the number of premature deaths, according to a report released Monday by the Obama administration.
A new report nearly doubles previous predictions for sea level rise if global emissions continue unabated, portending a doomsday scenario for many of the world’s coastal cities.


News of Climate Change

The more than 1 billion human beings living and working along the world’s coastlines are unlikely to be encouraged by new research showing that seal levels across the globe are rising faster than scientists previously thought.

While over time, total sea waters have not risen as much as earlier estimates, the levels are accelerating, according to a comprehensive new study published May 11 in the journal Nature Climate Change. In the past, scientists used frequently unreliable tide gauges to try to calculate sea levels. Such gauges can sit on land that rises or falls by the distribution of sediments or movement by earthquakes that compromise the accuracy of the gauges. Now, using cutting-edge technology, Christopher Watson, a geologist at the University of Tasmania and his colleagues, have re-examined satellite data taken since the early 1990s, correcting for factors that could have skewed earlier sea level measurements, according to a report by Science magazine. The new findings show that sea levels have continued to rise decade by decade. “What’s striking is its (the study’s) consistency with future projections of sea levels in the IPCC,” said Watson, in a report by Discovery News. “Those estimates state that there could be up to 98 centimeters (39 inches) of sea level rise to 2100. We’re certainly tracking on that upper bound of the IPCC projection and that projection for 2100 has significant impacts.” The IPCC is the U.N.’s Intergovernmental Panel on Climate Change—an organization made up of thousands of scientists from around the world who study the current and projected states of global climate change. Assets worth a staggering $11 trillion lie on coastal shores that are well below the predicted 2100 increase in sea levels. Experts say that 26 U.S. cities will experience significantly increased flooding by mid-century and that some, such as Baltimore and Honolulu, are already at that point, the Discovery News report said.

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