No.	Title	Date
541	High nitrous oxide production from thawing permafrost	2010
542	High rates of sea-level rise during the last interglacial period	2008-01
543	High risk of permafrost thaw
544	High-resolution carbon dioxide concentration record 650,000-800,000 years before present	2008-05-18
545	The Historic Fur Trade and Climate Change	2006-12-26
546	Holocene sea levels and palaeoenvironments, Malay-Thai Peninsula, southeast Asia	2005
547	Holocene thinning of the Greenland ice sheet	2009-09
548	Hot days induced by precipitation deficits at the global scale	2012-07-31
549	Hotspot of Accelerated Sea-Level Rise on the Atlantic Coast of North America	2012
550	How Can We Avert Dangerous Climate Change?	2007
551	How economic growth and rational decisions can make disaster losses grow faster than wealth	2011-03
552	How high will seas rise?	2010-01-20
553	How high will seas rise?	2010
554	How local communities and global development agencies reduce vulnerability to natural disasters and climate change ( external resource | internal citation )	2009
555	How resilient is your country?	2012-12-22
556	How science is telling us all to revolt	2013-10-29
557	How the Experiences of Ancient Floridians Inform the Challenges of Sea-Level Rise Today	2010
558	How will sea level respond to changes in natural and anthropogenic forcings by 2100?	2010
559	The Human Dimension of Climate Adaption ( external resource | internal citation )	2009
560	Human-induced climate change requires urgent action	2013