The Cut Is Burning

The Cuyahoga Is Still Burning

River caught fire as it flowed through Akron and Cleveland, Ohio. Although it was not the only river to burn, the image of this burning river—the terrible wronging of nature— became a symbol of the urgency for a transformation of environmental policy for the environmental movement of the 1970s, driving the creation of the U.S. Environmental Protection Agency (EPA) and the rapid passage of major...

Herbaceous Succession after Burning of Cut Western Juniper Trees

—The expansion of western juniper ( Juniperus occidentalis spp. occidentalis Hook.) in the northern Great Basin has resulted in the wide-scale conversion of sagebrush-steppe communities to juniper woodlands. Prescribed fire and mechanical cutting are the 2 main methods used to remove juniper and restore sagebrush steppe. Mechanical treatments commonly leave cut juniper on site. Disadvantages of...

Burning a graph is hard

We introduce a new graph parameter called the burning number, inspired by contact processes on graphs such as graph bootstrap percolation, and graph searching paradigms such as Firefighter. The burning number measures the speed of the spread of contagion in a graph; the lower the burning number, the faster the contagion spreads. We provide algorithmic results on the burning number, and prove th...

Ventricular tachycardia: is it a burning issue?

Is the biomass burning source of CO decreasing?

To investigate secular changes in CO and CH4, we examined monthly means of tropospheric measurements made from samples collected at 19 ®xed sites in the National Oceanic and Atmospheric Administration (NOAA) Climate Monitoring and Diagnostics Laboratory (CMDL) global cooperative ̄ask sampling network. The CH4 data are available for the period 1984±1995. A somewhat shorter time series is availab...