Global warming hiatus Global warming hiatus A global warming hiatus, also sometimes referred to as a global warming pause or a global warming slowdown, is a period of relatively little change in globally averaged surface temperatures. In the current episode of global warming many such 15-year periods appear in the surface temperature record, along with robust evidence of the long-term warming trend. Such a "hiatus" is shorter than the 30-year periods that climate is classically averaged over. Publicity has surrounded claims of a global warming hiatus during the period 1998–2013. The exceptionally warm El Niño year of 1998 was an outlier from the
Nuclear activities in Brazil weapons and rejected the idea of Brazil ever conducting PNEs. In a public rebuke of the military's nuclear activities, Collor held a ceremony in September 1990 to seal shut the nuclear explosive test shafts at the Air Force base in Serra do Cachimbo, Pará. During the early 1990s, the "autonomous" / "parallel" program was dismantled with some of its projects and facilities being integrated to the safeguarded one. Although a CPI established in 1990 uncovered some of the clandestine nuclear activities that had been undertaken, the government did not issue an official account of all facilities, materials and activities involved