It’s no longer breaking news that the costs of climate change will add up quickly as extreme weather linked to global warming leads to one costly disaster after another. But, nonetheless, on occasion it makes sense to pause and take stock, and this week offered two research items that remind me of how those will stack up. [time-brightcove not-tgx=”true”] The first is an April 15 report from the National Ocean and Atmospheric Administration (NOAA) that warns that coral reefs are undergoing a fourth “global bleaching event.” Bleaching—when corals lose their color—is a sign that corals are unhealthy and can result from a range of strains, including polluted water.