Antarctica is the world’s fifth-largest continent – and home to the coldest place on earth. One key indicator of global warming is melting ice on both the North and South poles. In that context, we wonder: What is the current elevation of the South Pole?
A. Sea level
B. 2,500 meters (8,200 feet)
C. 2,800 meters (9,200 feet)
D. 4,900 meters (16,100 feet) Continue reading →
In April 2017, atmospheric concentrations of carbon dioxide were measured at 410 parts per million. That threshold was passed likely for the first time in 3 million years. We wonder: Which major country is closest to the global average of five tons of CO2 emissions per person?
In 2015, the leaders of 191 countries met in Paris and hammered out a deal to combat climate change. We wonder: How much money would countries worldwide collectively need to invest by 2030 to meet the minimum clean energy targets of the Paris Agreement?
A. One year’s worth of global GDP
B. One year’s worth of U.S. GDP
C. One year’s worth of the GDP of China and India
D. Global annual defense spending Continue reading →
As the global warming trend continues, the deterioration of Antarctica’s ice sheets is fast becoming a matter of worldwide concern. We wonder: Which of the following statements related to the melting of Antarctica’s ice are true?
A. Sea levels have risen 7.5 cm (2.9 in) since 1997.
B. Recent meltwater could fill a US- or China-sized reservoir 10 cm (4 in) deep.
C. Sea levels could rise by 1.5-1.8 meters (5-6 feet).
D. Sea levels could rise by 13.1 meters (43 feet). Continue reading →
The December 2015 climate talks in Paris are focusing the world’s attention anew on the major global sources of greenhouse gas emissions. We wonder: What percentage of global CO2 emissions from human activity stems from deforestation and land conversion?
Global carbon emissions reached almost five tons per person on Earth in 2013 — the highest level on record. While emissions appear to have stalled in 2014, they need to fall much further to limit the extent of global warming. We wonder: Which major country is closest to the global average of five tons of CO2 emissions per person?