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The election of Donald Trump brought disarray to the climate change regime. The changes in what was up to then a promoter of the liberal international order (LIO) exacerbated existing tensions while creating new ones. This paper investigates how that challenge impacted the behaviours of Brazil, China and the European Union (EU) by comparatively analysing their dissimilar positions with respect to three indicators before and after Trump's coming into power. These indicators are individual pledges and climate-related policies; approaches to climate finance; and the principle of common but differentiated responsibilities and respective capabilities (CBDR-RC). The analysis first shows how the US started eroding the broader LIO and the climate change regime to then delve into the behaviours of the three respective key players concerning climate talks. I sustain that the EU, despite its inner divisions, is already counteracting Washington, whereas China is combining a pro-status quo position based on a rhetorical condemnation of the United States. Brazil, in turn, had a transition towards a climate-sceptic government, shifting from being a cooperative actor to abdicating hosting the COP25. [ABSTRACT FROM AUTHOR]

Abstract: Low resolution of the continental sedimentary record is a common source of skepticism about the application of geomorphology and sedimentology to Quaternary studies. In spite of this, when supported by independent proxy data, geomorphology and sedimentology may favor palaeo-hydrologic interpretation. This paper associates geomorphologic, stratigraphic, sedimentologic, isotopic, palynologic and geochronologic data. The research was conducted in valley head sites in southern Brazilian highlands, under mild subtropical climate. The results point to environmental changes, the ages of which coincide to Marine Isotopic Stages (MIS) 5b, 3, 2 and 1. Although late-Pleistocene temperatures and precipitation were lower than those of today, the study valley heads seem to have sustained locally wetter environments, which fed shallow soil–water saturated zones. These saturated zones are believed to have expanded during transitions between stadial and interstadial states, contributing to hillslope erosion and sedimentation regardless of the sign of the climatic change. The interior organization of holocenic slope-wash deposits suggests that the mid-Holocene climate was drier than today’s and was under the influence of seasonally contrasting precipitation regimes. The predominance of overland flow-related sedimentary records suggests that an excess of precipitation over evaporation influenced local palaeo-hydrology. This palaeo-hydrologic condition seems to have been recurrent and also explains the alternating periods of pedogenesis and sedimentation. [Copyright &y& Elsevier]