The Science and Public Policy Institute has been asked to comment on the apparent inconsistency between the news that July 2012 was the warmest July since 1895 in the contiguous United States and the news that the Meteorological Office in the UK has cut its global warming forecast for the coming years. The present paper is a response… Read More »
Based on model projections, climate alarmists contend that global warming should lead to both more frequent and more extreme weather phenomena, such as droughts and floods. It is important, therefore, to search for real-world evidence of these phenomena, especially over the past century when temperatures and CO2 concentrations rose to levels that climate alarmists claim are unprecedented over… Read More »
Among the highly publicized changes in weather phenomena that are predicted to attend the ongoing rise in the air’s CO2 content and temperature are increases in the frequency and severity of all types of storms; and, therefore, in an effort to determine if these predictions have any validity, many researchers have examined pertinent historical and proxy weather records.… Read More »
Nearly three decades ago, Idso (1986) published a small item in Nature that advanced the idea that the aerial fertilization effect of the CO2 that is liberated by the burning of coal, gas and oil was destined to dramatically enhance the productivity of Earth’s vegetation. In fact, in a book he had published four years earlier (Idso, 1982),… Read More »
Climate alarmists are continually warning the world about potentially-catastrophic negative consequences of CO2-induced global warming, which they contend will wreak havoc with Earth’s natural and agro-ecosystems. In this summary we review how vegetative productivity has fared throughout various countries in Asia outside of China over the past few decades, when air temperatures and atmospheric CO2 concentrations have risen… Read More »
One of the many dangers of global warming, according to the world’s climate alarmists, is the predicted propensity for rising temperatures to produce more frequent, more severe, and longer-lasting droughts almost everywhere on Earth. But just how realistic are the climate models upon which these claims are based? And what does real-world climatic history have to say about… Read More »
On a per-unit-biomass basis, Smart et al. (1998) noted there were no differences in the total amounts of nitrogen within CO2-enriched and ambiently-grown wheat seedlings after three weeks of exposure to atmospheric CO2 concentrations of 360 and 1,000 ppm. Nevertheless, the CO2-enriched seedlings exhibited greater rates of soil nitrate extraction than did the ambient-grown plants.
Granados and Korner (2002)1 grew three tropical understory vines (Gonolobus cteniophorus, Ceratophytum tetragonolobum and Thinouia tomocarpa) for seven months in controlled environment chambers maintained at atmospheric CO2 concentrations of 280, 420, 560 and 700 ppm in combination with low and high light intensities to study the interactive effects of the two parameters on the vines’ growth. On average,… Read More »