Greenland’s largest outlet glacier has receded over 40km since 1850 thumbnail: http://svs.gsfc.nasa.gov/vis/a000000/a003800/a003806/Jakobshavn_ortho_68.94N_69.39N_49.212W_51.372W_gal.png

Ten Years of TIRS: Data for a Thirsty World
Landsat 8 very nearly flew without a thermal infrared sensor. This is the backstory of how TIRS made it onto Landsat 8.