The amount of sea level rise that many of us will experience in our lifetimes may be more than double what was previously anticipated, unless we sharply curtail greenhouse gas emissions, according to a study led by Lab co-director Robert Kopp that factors in emerging, unsettling research on the tenuous stability of the Antarctic Ice Sheet. Importantly, the study highlights that cuts we could still make to greenhouse gas emissions during the next several years would significantly reduce the possibility of a sea level rise calamity after 2050.