During the end-Permian ecological crisis, terrestrial ecosystems experienced preferential dieback of woody vegetation. Across the world, surviving herbaceous lycopsids played a pioneering role in repopulating deforested terrain. We document that the microspores of these lycopsids were regularly released in unseparated tetrads indicative of failure to complete the normal process of spore develop...

Crisis intervention, as it has evolved over the last five decades, has clearly demonstrated its effectiveness as a tool to reduce human distress. Nevertheless, as with any effort to alter human behavior, there are risks associated with crisis intervention. One such risk is that of premature intervention. Premature intervention may not only waste valuable intervention resources, but may serve to...

Most economists and observers place the lack of fiscal discipline at the core of the recent Argentine crisis. This begs the question of how countries like Belgium or Italy (pre-Maastricht) could run large fiscal deficits and accumulate debts far beyond those of Argentina, without experiencing crises nearly as dramatic as that of Argentina? Why is it that Argentina cannot act like Belgium or Ita...

Katrina (a tropical cyclone/hurricane) began to strengthen reaching a Category 5 storm on 28th August, 2005 and its winds reached peak intensity of 175 mph and pressure levels as low as 902 mb. Katrina eventually weakened to a category 3 storm and made a landfall in Plaquemines Parish, Louisiana, Gulf of Mexico, south of Buras on 29th August 2005. We investigate the time series intensity change...

In this study, the inner-core structures of Hurricane Andrew (1992) are explicitly simulated using an improved version of the Penn State–NCAR nonhydrostatic, two-way interactive, movable, triply nested grid mesoscale model (MM5). A modified Betts–Miller cumulus parameterization scheme and an explicit microphysics scheme were used simultaneously to simulate the evolution of the larger-scale flow...

A VHF atmospheric radar (wind profiler) was used to study tropospheric winds during DAWEX. The profiler, which operated at a frequency of 54.1 MHz, was located at Pirlangimpi (Garden Point) (11.4S, 130.5E) on the Tiwi Islands. Observations were made regularly up to heights near 8 km, with maximum heights occurring when convective activity was strongest. Mean winds observed between October and D...

A number of unsustainable trends, such as those related to climate change, biological diversity, environmental pollution, depleting fish stocks, deforestation, accumulating radioactive waste threaten people in different parts of the world and globally. In addition to this we are experiencing a financial crisis. Something appears to be seriously wrong with the mental maps of influential actors i...

environmental crisis is one of the most important global problems. dealing with this crisis as a collective effort requires formation of environmentalism attitudes among people. what is considerable in this field is to identify the factors affecting people’s attitudes towards environmentalism especially women. since, based on two main perspectives of ecofeminism; i.e. women's relationship ...