No.	Title	Date
621	Check With Climate Scientists for Views on Climate	2012-02-01
622	Temporal and Spatial Variability of Great Lakes Ice Cover, 1973-2010	2012-02-15
623	Resurging North American Oil Production and the Death of the Peak Oil Hypothesis	2012-02-15
624	Predicting and managing extreme weather events	2012-03
625	Modeling the Economic Costs of Climate Policy	2012-03-15
626	Broad range of 2050 warming from an observationally constrained large climate model ensemble	2012-03-25
627	Letter to The Honorable Charles Bolden, Jr.	2012-03-28
628	Tahitian record suggests Antarctic collapse	2012-03-29
629	Ecosystem Processes and Human Influences Regulate Streamflow Response to Climate Change at Long-Term Ecological Research Sites	2012-04
630	Global warming preceded by increasing carbon dioxide concentrations during the last deglaciation	2012-04-05
631	Atmospheric observations of Arctic Occean methane emissions up to 82 degrees north	2012-04-22
632	Antarctic ice-sheet loss driven by basal melting of ice shelves	2012-04-26
633	Guilt trip	2012-05
634	Lethally Hot Temperatures During the Early Triassic Greenhouse	2012-05-01
635	Understanding the Dynamic Response of Greenland's Marine Terminating Glaciers to Oceanic and Atmospheric Forcing	2012-05
636	21st- Century Evolution of Greenland Outlet Glacier Velocities	2012-05-04
637	Could methane produced by sauropod dinosaurs have helped drive Mesozoic climate warmth?	2012-05-08
638	Transformational adaptation when incremental adaptations to climate change are insufficient	2012-05-08
639	Twenty-first-century projections of North Atlantic tropical storms from CMIP5 models	2012-05-13
640	Fear and hope in climate messages	2012-06-17