4. Earth Goes to Extremes

Record heat waves, droughts, floods, and melting:  In 2012 our planet's weather went places it had never gone before, leading to a string of costly and destabilizing environmental disasters. 

By Linda Marsa|Friday, December 21, 2012
RELATED TAGS: NATURAL DISASTERS, WEATHER
flooding

1. Canada, United States / Oyster Die-Off  More than 80 percent of oyster larvae are not surviving in Pacific Northwest commercial hatcheries. The high mortality rate is due to ocean acidification, partly driven by carbon dioxide emissions, according to an April 2012 study.

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