The Earth's climate is changing at an unprecedented rate, with rising atmosphere and ocean temperatures, snow and ice retreat, sea-level rise and growing concentrations of greenhouse gases (IPCC 2014).
The result is collapsing fisheries, a rising carbon debt in the atmosphere, massive tropical deforestation, and social devastation just visit the Aral Sea, Haiti or Darfur.
Once upward air motions are initiated in an unstable atmosphere, rising parcels of warm air accelerate as they rise through their cooler surroundings because they have a lower density and are more buoyant.
As the earth's temperature rises, the atmosphere can hold more moisture and becomes wetter as more water evaporates from the surface.
Another sees her climb the stairs of a tower, rising out of the earth's atmosphere, into weightlessness, into space.
In 1968, in an atmosphere of rising anti-American sentiment, a charismatic National Guard officer, Omar Torrijos, seized power and installed a populist regime that pushed for negotiations for Panamanian control of the Canal Zone.
Abuja's politicians express an awareness that such an atmosphere is rising and perhaps slipping beyond their control.
The action of warm air rising rapidly through the atmosphere is usually a trigger for sustained, sometimes violent, rainfall.
At the same time, moist air, saturated and cooled while rising into the atmosphere, then encounters the medicane and permits further development and evolution into a tropical cyclone.
Yeast dough rises best in a warm moist atmosphere; 27°C (80.5°F) is optimum, but a slower rising is preferable to one that is too fast.
